The Impact of SO MUCH Water on Trees!

By TJ Nagel
ISA Board Certified Master Arborist® OH-6298B
August 1, 2025

Happy Friday, August 1st! Here are 3 quick thoughts I’d like to share this morning:

1. SO MUCH RAIN!

This is the wettest growing season I can recall to date in my professional career as an ISA Board Certified Master Arborist®. Normally by this point in the year, I’m watering different parts of my garden daily and have set up the sprinkler on my lawn at least a few times. I have done neither of those things thus far and even found myself moving some of my container grown trees this past weekend onto the porch because they were being over-watered by mother nature and starting to show signs of stress. Despite the beautiful green lawns and lush new growth in our trees and shrubs, the high volume of rain mixed with cool overnight temperatures have resulted in some of the most prolific foliar fungal disease symptoms I have observed to date. Anthracnose, a common foliar fungal disease of oak, maple, ash and sycamore has run rampant through central Ohio and I’m even noticing it in native forest grown trees. Applescab, black spot and rust diseases on foliage have also been unusually bad. Even some trees that have been preventatively treated in the spring are developing symptoms due to the longer than normal “spring-like” wet season we’re experiencing. The good news is that most of the foliar fungal pathogens we deal with are aesthetic in their damage, often just causing leaf distortion, brown spots on the leaf surface or partial defoliation, and have little impact on the overall long-term health of the tree. Some of these diseases can be easily managed so give us a call if we can help!

An example of anthracnose

2. The Dryness is (Likely) Coming

Despite the excessive moisture we’ve had throughout the summer so far, we’re at the beginning of what has historically been the driest part of the growing season in central Ohio. August and September are the two months that I see the highest mortality of newly planted trees and shrubs due to drought stress. The drought of last August and September 2024 was historic and for the first time, I observed established trees that had been planted correctly and in the ground for over a decade dry up and die. Generally, healthy and established trees that have been in the ground for over 5 years do not require supplemental water to get them through the growing season. When we have stretches of 6 to 8 weeks without rainfall, even your established trees need help. Do not let yourself be fooled by how wet the season has been thus far. When conditions change this month, be sure to have your watering wands (and buckets) out and ready. Remember that delivering water to trees and shrubs slowly and deeply is the key and that in most cases, irrigation systems and sprinklers, although great for lawns and flower beds, will not reach the depths required to sufficiently hydrate tree roots. Last year, Russell Tree Experts began offering a new service called deep root irrigation (DRI). DRI uses a lance to inject water deep into the root system of trees and shrubs. This method helps bypass the roots of turf, weeds, or ground cover and delivers water directly to the tree roots while also reducing water lost to runoff or evaporation like you might experience if applying water at the surface level. We saved many newly planted trees and woody landscapes with this service through the end of last summer/early fall and kept a lot of newly planted trees hydrated while their owners were on vacation. Let us know if we can help you with your tree watering needs!

3. Meet New Team Members!

Lastly (but not leastly), I’d like to introduce the two newest members of our management team, Andrew Hendricks and Alex Miller. Both of these gentlemen are ISA Certified Arborists®, have a long history of excellence at Russell Tree Experts and have likely been in your yard already to prune a tree or treat for a disease/insect problem. Andrew joined Russell Tree Experts in 2020 and has been working in the green industry for over a decade. He holds degrees in forestry and wildlife management and is an avid gardner and outdoorsman. Alex has a strong background in the nursery industry and has been working to keep your trees maintained and healthy at Russell Tree Experts since 2021. These guys are dedicated to the long term care of trees and to making the world a better place. We’re fortunate to have them on staff! They’ll be out and about regularly performing consultations and estimate requests so don’t be shy if you see them in your yard. You’ll be in great hands. As always, for a free tree work quote by one of our 25+ ISA Certified Arborists®, visit RussellTreeExperts.com/Quote or speak with our friendly, local office at (614) 895-7000!

Andrew Hendricks

Alex Miller

ADDITIONAL ARBOR ED™ ARTICLES!

TJ Nagel I Scheduling Production Manager, Russell Tree Experts

TJ joined Russell Tree Experts in 2012 and loves trees. He is an avid gardener and plant collector. TJ graduated from The Ohio State University with a B.S. in Agriculture with a major in Landscape Horticulture and minor in Entomology. TJ is an ISA Board Certified Master Arborist® and well versed in plant pathology and tree ID.

5 Tree Watering Methods Ranked Worst to Best!

By Enrique Arayata
ISA Certified Arborist® OH-7252A
July 24, 2025

WHY WATER A TREE? 

Water is one of the most important resources for a tree’s health and vigor. Without sufficient water, a tree will stop growing and eventually decline to its death. However, on the flip side, too much water for a tree and its root zone can also lead to a tree’s decline. As with many things in life, proper tree watering is about finding that balance and being somewhere between too little and too much watering. Let’s go over 5 different ways to water a tree from worst to best! 

HOW TO WATER A TREE?

OPTION 1
LAWN SPRINKLER 

Watering a tree with a sprinkler or hose is one method of tree watering, however, it is typically inefficient for trees and woody plants. A tree takes in water through its roots, and it is common to see sprinklers and hose operators spray water on the tree’s trunk and leaves. Not only is this an inefficient use of water, but it can lead to leaf scorch if watering is done during a bright and sunny day. A slightly more effective method would be to point the water towards the tree roots, but another issue to be cautious of is water running off and ending up elsewhere such as nearby grass, plants, concrete, or towards a sewer drain. Over time, this can also contribute to erosion through soil displacement. This can be minimized by installing a tree mulch ring with a subtle berm around the perimeter so that the mulch can retain as much water for the tree as possible. Out of the 5 tree watering methods discussed here, this would be my last option, but it is better than nothing and is a good alternative to not watering at all. 

Overall Rating: ★☆☆☆☆

OPTION 2
Water BUCKET

A second way to water a tree would be to grab a bucket, fill it with water, and then dump it over the tree’s root zone. This will do a better job at targeting the tree’s roots for proper water absorption and minimize any risk of leaf scorch by keeping the leaves dry, but water runoff can still be a concern, especially if you dump the water all at once. To minimize this, the bucket of water can be slowly distributed in a circle around the tree anywhere from 1 to 3 feet away from the trunk. A disadvantage to this approach is that too much water at one time can lead to runoff. 

Overall Rating: ★★☆☆☆

Option 3
WATERING CAN/GARDEN HOSE

Another tree watering method would be to slowly water the tree using a watering can or a garden hose on a slower, softer setting. Avoiding the trunk and canopy of the tree will eliminate the risk of leaf scorch and reduce the rate of evaporation. Watering at a slower, longer duration will help water infiltrate deeper into the root system and encourage more outward root growth. If using a watering can, I recommend watering 1-2 inches away from the surface and in a circle around the canopy drip line to minimize water runoff.  

Overall Rating: ★★★☆☆

OPTION 4
IRRIGATION LANCE 

Next up, is watering a tree with an irrigation lance! Deep root irrigation (DRI) involves the use of an irrigation lance to penetrate the surface of the soil and inject water a few inches below ground level, directly targeting the root zone of the tree. Benefits of this watering method are that it minimizes water absorption by aboveground, competing plants, and eliminates any water runoff. Additionally, the water comes out of the lance at about 200 psi and splits into four separate streams that help to break up compacted soil and add valuable pore space into the soil profile for future root growth.  

Deep root irrigation is a service that Russell Tree Experts offers to customers, but an irrigation lance can also be purchased at a home-and-garden store that can connect to your garden hose at home. One detail to consider is that the water from your garden hose may not come out at a high enough psi to break up some compacted soil, but you would still be achieving the goal of watering your trees! One benefit of having Russell Tree Experts water your trees is that we can access trees hard to reach by garden hose (if they are far away from the hose bib) and also water your trees if you are not home, such as on vacation! 

Overall Rating: ★★★★☆

More on deep root irrigation!

OPTION 5
DRIP IRRIGATION

And lastly, one of the most effective and efficient methods of watering a tree is through drip irrigation. This is the process of applying water slowly over an extended period of time. Drip irrigation is very similar to method 3 (with the watering can/garden hose), but the difference is that you slow it down significantly and water over the course of an hour, or even longer depending on the size of the tree. This heavily reduces the potential for water runoff, soil/mulch erosion, and water evaporation. Due to the slower release, the tree will take in water for longer compared to a quick, few minutes of hose spraying. Less water can be used as a higher percentage of water will be targeted towards the tree and not stolen by nearby grass and plants or evaporated by the sun. 

The most expensive way to perform drip irrigation is to install an underground irrigation system with aboveground drippers poking out near the tree’s root system. A cheaper alternative is to use a garden hose nozzle with a locking system, on a low output setting like mist or soaker, to water your tree! Just don’t forget to pick it up once you’re done! Another solution is to use a bucket of water and poke 2 to 3 tiny holes at the bottom so that the water will slowly release. Be cautious as the holes can be clogged up by debris and, depending on the size of your bucket and tree, you may need to refill the bucket more than once. Lastly, another form of drip irrigation is using a tree watering bag. Garden centers typically sell 20-gallon tree watering bags that can be quickly filled but slowly released. Similar to the bucket, the holes can also get clogged up by debris and will need to be inspected periodically. 

Overall Rating: ★★★★★

Drip irrigation in action!

HOW MUCH WATER FOR A TREE? 

Now that you have learned about the worst and best ways to water a tree, you may be asking yourself “how much should I water my tree?” Well... it depends! The International Society of Arboriculture (ISA) does not have set guidelines, and neither does Russell Tree Experts. A general rule of thumb is somewhere around 5 to 10 gallons per inch of trunk diameter at breast height (dbh). Various factors can affect the exact volume such as water runoff, evaporation rate depending on if it’s sunny or hot versus cold and cloudy, competition from nearby grass and plants, level of tree establishment, amount of precipitation during the week, and your patience and commitment to watering. For instance, a newly installed 2-inch dbh tree in the summer at full sun may need 20 gallons of water while an established, more mature 10-inch dbh tree on a cloudy, fall day may only need 50 gallons of water. 

WHEN TO WATER A TREE? 

The best time of day to water a tree is during sunrise or sunset. Temperatures are generally cooler, and the sun is less prevalent, leading to reduced evaporation and leaf scorch. Wet leaves overnight have a risk of fungal and disease issues while wet leaves in the middle of a sunny day have a risk of leaf scorch.  

In terms of frequency... it depends! A newly planted container tree will benefit from watering every 2 to 3 days and a newly planted balled-and-burlapped tree once per week for at least the first 2 to 3 growing seasons (spring through fall). A large, mature tree may not need to be watered except in periods of extended drought and can water itself through its large root system or natural rain. During sunny, summer weather, all trees can benefit from tree watering every few days. During colder, winter weather after first frost, trees may not need to be watered at all except in fringe cases such as planting an evergreen tree late in the fall. If you want the broadest rule of thumb that comes with many exceptions and caveats, water your tree 3 to 4 times per week in the summer, 2 to 3 times per week in the fall and spring, and 0 times per week during most winters, adjusting this based on the tree’s root establishment, weekly temperature, and level of precipitation during a given week. 

WHERE TO WATER A TREE? 

The answer to this question does NOT depend! The best location to water a tree is in a circle around the tree between the trunk and canopy drip line. The canopy drip line of a tree is the furthest point that a tree’s leaves reach out to and will drip water during a rainy day. In other words, if you look straight up and do not see any leaves, you are past the canopy drip line. There is a common misconception to water a tree right next to the trunk a few inches away. Although this is not a bad location, a tree can take in water from even further away and water should be as uniformly distributed as possible to promote healthy and outward root growth! 

The canopy drip line of a tree is the furthest point that a tree’s leaves reach out to and will drip water during a rainy day.

CONCLUSION 

And there you have it, the essentials of what you need to know about watering a tree! The only other tip I recommend is to install a 2- to 4-inch-deep tree mulch ring around the tree to help conserve water for the tree. A tree mulch ring has a plethora of other benefits such as increased nutrient availability, better temperature regulation, decreasing the risk of stem-girdling roots, outcompeting with other plants, minimizing trunk damage, soil decompaction, and increased visual aesthetics! Just be cautious of piling mulch near the root flare/base of the tree! The mulch ring should be level, and the root flare should be exposed. As my friend and coworker TJ Nagel, an ISA Board Certified Master Arborist®, once said, “watering is the single most importance maintenance factor in the care of newly planted trees.” For a free tree work quote by one of our 25+ ISA Certified Arborists®, including deep root irrigation, visit RussellTreeExperts.com/Quote or speak to our friendly, local office staff at (614) 895-7000! 

ADDITIONAL ARBOR ED™ ARTICLES!

Enrique Arayata I Media Production Manager, Russell Tree Experts

Enrique is an ISA Certified Arborist® and FAA Certified Remote Pilot. In his free time, he enjoys working out, hanging out with his family and girlfriend, video production, photography, cars, technology, and cooking. Enrique has a BA in moving image production with a double minor in film studies and studio art specializing in photography from The Ohio State University, and an AA in web graphic design from DeVry University. His favorite tree is the Kwanzan cherry tree.

3 Tree Tips From an RTE Insider!

By TJ Nagel
ISA Board Certified Master Arborist® OH-6298B
July 17, 2025

I'm fortunate to have a partner that loves trees as much as I do. When I met Annette working in the nursery industry twenty-ish years ago I just thought she was cute, she made me laugh and I admired the way she helped people and animals. Over the years, Annette and I have worked together in various gardens, we have spoken together at gardening events, cared for the same clients and we have both become professional arborists. We share a passion for the outdoors, seeing new trees in new places and collecting new plants for our garden when we discover them. In short, she gets me.   

Through her gardening and consulting business, Annette has always proudly promoted responsible tree care and the work that Russell Tree Experts performs. When an opportunity came up this Spring to hire a seasonal Tree Wellness technician, I (somewhat jokingly) suggested that she apply and see things from the other side. She got the position and we got to work together once again! Over the last four months our dinner chats and evening conversations have been filled with observations, debate and education. Listening to her learn the industry was nostalgic and reminded me of why I got into the tree care industry. Annette is back to running her own business again but she will always be a part of Russell Tree Experts. Here are a few things she wanted every client to know -  written in her own words.  

1. Mulch Madness!

Don't smother your plants. In no less than 90% of the yards I visited, mulch was overdone—especially around the base of trees and shrubs. While mulch has its benefits, piling it too high can actually harm your plants.

Here's why: the root flare—the area where the trunk meets the roots—needs air and water to function properly. When mulch is too thick or pressed against the base, roots may grow upward into the mulch in search of oxygen and moisture. This can prevent them from accessing nutrients in the soil, leading to common problems like chlorosis (yellowing leaves), less vigor. Please don't forget this is important
with shrubs as well.

A visual tip: If a tree looks like a telephone pole going into the ground, it's a sign the root flare is buried—and that's worth checking.

An example of a mulch volcano. Note the lack of an exposed root flare.

2. Not All Fertilizers Are Created Equal

One thing that stood out to me was the quality of the fertilizer used by RTE. Unlike synthetic fertilizers that are heavy in quick-release nitrogen (which can cause fast, weak growth that attracts pests), RTE uses their own naturally composted blend. This organic fertilizer acts more like a soil conditioner—enriching the soil with beneficial microbes, improving its structure, and helping roots absorb nutrients more efficiently. It's a smarter, long-term approach to plant health.

An irrigation lance used to fertilize trees below ground level.

3. A Culture That Cares (About Plants and People)

Even after moving on from the role, I still think about how impressed I am with RTE's company culture. From top leadership and gifted mechanics to the crews in the field, the commitment to doing things right was clear.

Each week, the team holds mandatory "tailgate meetings" focused on safety, plant science, the latest climbing techniques and equipment care—something I haven't seen elsewhere in my 35 years of working in horticulture. I'm not in the habit of suggesting to someone to switch companies if they are already happy with the relationship they have with their current tree company, but my third tip is that I am even more confident referring RTE after working on the inside to homeowners or someone who wants a cool career in tree work than I already was as an observer. It is important to choose a tree company who cares about safety and determining the best method of care for the health and vigor of your trees. I'm also grateful to have a platform on which to share my observations.

And yes, I was genuinely proud to drive around in that beautifully wrapped truck with the crabapple blossoms and have so many opportunities to speak with many of you.

One of our multiple plant healthcare trucks used to help maintain and preserve trees across central Ohio!

ADDITIONAL ARBOR ED™ ARTICLES!

TJ Nagel I Scheduling Production Manager, Russell Tree Experts

TJ joined Russell Tree Experts in 2012 and loves trees. He is an avid gardener and plant collector. TJ graduated from The Ohio State University with a B.S. in Agriculture with a major in Landscape Horticulture and minor in Entomology. TJ is an ISA Board Certified Master Arborist® and well versed in plant pathology and tree ID.

The ULTIMATE Tree Planting Guide!

By Enrique Arayata
ISA Certified Arborist® OH-7252A
May 29, 2025

- - - -

We’re in the middle of the growing season, which means tree planting time! There are generally 3 commonly sized trees: Tree saplings, container trees, and balled-and-burlapped trees! In today’s article we’ll be discussing how to best plant each of these 3 tree types. With the focus being on installation, we’re not going in-depth on tree selection, planting site selection, or post-installation watering, maintenance, and protection, but articles written by my fellow coworkers and ISA Certified Arborists® on all these supplemental topics will be linked further in this article!  

The first 3 steps for planting any type of tree that I’ll briefly acknowledge but skip past will be to: 

1. SELECT YOUR TREE PLANTING SITE! -> [More Info]

2. SELECT A TREE THAT’S COMPATIBLE WITH YOUR SELECTED PLANTING SITE!

3. NOTIFY YOUR LOCAL UTILITY PROTECTION SERVICE! Call before you dig! It might feel like an unnecessary hassle to begin with, but it’s free and a significantly smaller headache compared to hitting an underground line. In Ohio, it’s OUPS and can be contacted by visiting oups.org. Nationally, you can call 811 to speak with your local utility protection service company! -> [More Info]

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Since a tree sapling’s root system is so small, bare root trees are the smallest, cheapest, and easiest trees to purchase and plant! Another benefit is that they will establish their roots to the planting site easier than a container or balled-and-burlapped tree, making it less susceptible to leaning or falling over during high winds compared to the other 2 tree types. Some disadvantages to consider are that it will take more time to reach full maturity, and they are harder to spot by a distracted lawn mower operator. Somehow both my dad and my uncle mowed over a tree sapling by accident.  

Steps

1. SOAK YOUR TREE! Soak your tree sapling in water for 5-7 minutes to thoroughly moisten the sapling’s root system.  

2. DETERMINE YOUR HOLE SIZE! Measure the sapling’s base of the root to its root flare (meeting point between the roots and the trunk) to determine the depth of your hole.  

3. DIG YOUR HOLE! Your tree hole needs to only be as deep as the measurement between the root flare and bottom of the tree sapling’s roots. Regarding width, a 1 feet diameter circle is more than enough.  

4. DOUBLE CHECK YOUR MEASUREMENTS! Double check your hole’s depth and width! Adjust if necessary. To test this, place your sapling in the hole and ensure that the root flare is equal to the surrounding soil level. Do not cover or bury the root flare. It should be above ground level.  

5. PLACE YOUR TREE IN THE HOLE! Make sure the tree is straight and not leaning. Ensure that the root flare is visible at or slightly above ground level. 

6. BACKFILL THE SOIL! Place the dug-up soil back into the hole. Lightly compact the soil as you begin to reach ground level. You can use your feet/shoes to compact the soil around the tree sapling. Optionally, a 2-4 inch layer of organic wood chip mulch is recommended for numerous reasons such as increased water retention, minimizing temperature fluctuations, increased trunk protection, having less grass to mow, and subjectively, improved aesthetics and curb appeal. 

7. WATER THE TREE! Lightly water the soil (or mulch) around your tree to add moisture back into the surrounding ground. This is especially important when planting saplings in dry or summer-like conditions.  

8. AND... DONE! Voila, your tree sapling has been installed!  

Video

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STEPS

1. DETERMINE THE SIZE OF YOUR HOLE! The hole should be a few inches wider than the tree’s pot, but 1-4 inches shallower than the height of the soil in the tree’s pot. This height difference is because it’s very common for a tree’s root flare (the boundary between the root and the trunk) to be buried in a nursery pot, which is no good. This will be addressed in an upcoming step. The overall shape of the hole should be half of a sphere with its deepest portion being in the middle. 

2. DIG YOUR HOLE! If you’re digging next to grass and you care about your lawn, I would recommend placing your dug-up grass in a wheelbarrow or on a tarp. 

3. DOUBLE CHECK YOUR MEASUREMENTS! Once you’re done digging, double check your work! Again, the hole should be a few inches wider than the tree’s pot, and the depth should be 1-4 inches below the soil’s height. Make adjustments if necessary. 

   Many of my fellow ISA Certified Arborists®, including myself, like to plant trees 1-3 inches above the surrounding ground level as trees commonly settle over the next couple of years. This is to also ensure that the root flare is exposed and not buried, which can cause stem girdling roots. 

4. SLICE THE ROOT BALL 4 TIMES! Take the tree out from the pot and slide 4 straight, evenly distributed lines across the root ball every 90 degrees. This will break up and loosen both the dirt and roots which will help minimize the risk of stem girdling roots and encourage outward growth. Optionally, you can also clean up and remove any small or entangled surface roots. 

5. TEST FIT YOUR TREE! Place your tree in the hole! Triple check that the hole’s shape, depth, width, and height is adequate. As mentioned earlier, if the root flare is 1-3 inches above ground level, this is perfectly fine as the soil will likely settle over time. Make adjustments if needed. 

6. BACKFILL YOUR HOLE! It’s perfectly fine to use the existing, dug-up soil, but optionally, you can mix the dirt with a soil amendment like compost, manure, or topsoil in a 1:1 ratio to add more nutrients into the ground. If you want to save yourself some future weeding, I strongly recommend taking the time to remove any grass from the dug-up soil. As you’re backfilling, break up any chunks of dirt to obtain a fine, porous texture to improve water infiltration and gas exchange. Additionally, observe the tree’s lean or lack thereof to ensure that it is still straight and plumb. The tree can easily lean during the backfilling process. Compact the soil every couple of inches with your hands or feet to eliminate any large air pockets. You want to aim for a compaction level between large air pockets that you can hide your penny collection in, and construction-grade compacted soil where little air and water can transfer through. 

   I strongly recommend adding a 2-4 inch layer of organic wood chip mulch in a ring around the tree. The mulch should match the surrounding grade and not be piled into a mound or volcano-like shape. The radius can be as small as 2 feet wide or as wide as the canopy drip line (the farthest point that leaves or branches extend out to). There are numerous benefits such as reducing the risk of stem girdling roots, less resource competition with nearby grass and above-ground plants, increased water retention, minimizing trunk damage, soil decompaction, and subjectively, increased visual aesthetics and curb appeal. 

7. WATER THE SOIL! You want the soil (or mulch) to be dark brown and saturated with water. Avoid any sitting or pooling water. 

8. PRUNE YOUR TREE! Perform a few, minor pruning cuts. Look for any branches that are rubbing, crossing, or dead and prune them back to the base of a union. 

9. REMOVE TAGS! If there are any tags on the tree and you haven’t removed them already, now’s the time to take them out! 

10. AND VOILA, DONE! Congratulations, your new tree is now installed! 

Video

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STEPS

1. DETERMINE THE SIZE OF YOUR TREE HOLE! Measure your tree so you can determine the size of your hole. For a balled-and-burlapped tree, the International Society of Arboriculture (ISA) recommends a hole diameter 1.5 to 2 times larger than the diameter of the root ball. So, if for example your root ball is 3 feet wide, then a hole diameter of 4.5 to 6 feet is recommended. Regarding hole depth, it should be approximately as deep as the root flare of your tree. It is important to note that many balled-and-burlapped trees are already too deep within their own root ball and wire cage. Do not assume that the top of the root ball is the trunk flare. My experience is that more often than not, I have to remove a few inches of soil from above the trunk flare at the time of planting. Many of my fellow ISA Certified Arborist® coworkers and myself like to even plant the tree with the root flare 1-3 inches above ground level to compensate for the soil settling over time. The worst outcome would be for the root flare to be buried and/or below ground level. If the trunk flare is below grade, the tree will be planted too deep and will be more prone to stem girdling roots, reduced vigor, and will become more vulnerable to pests and disease. It is perfectly acceptable if the root flare is slightly above ground level and not perfectly in line with the surrounding grade. 

2. DIG YOUR HOLE! This is definitely the most laborious step, so make sure you have water nearby and you take breaks as needed! Have a game plan for what to do with any dug-up soil and grass. One idea could be to place the top portion of grass into a yard waste bag and place the below-ground soil on a tarp or wheelbarrow. The nearby grassy lawn will thank you for not placing dirt directly on top of it. 

3. DOUBLE CHECK YOUR WORK! Once you’re done digging, double check your measurements! Again, the hole should be 1.5 to 2 times wider than the root ball’s diameter and the depth in the center should be the measurement from the bottom of the root ball to the tree’s root flare. You can be 1 to 3 inches below this measurement in order to ensure that the tree is planted with or slightly above the surrounding grade. Make adjustments to your hole if needed. 

4. TEST FIT YOUR TREE! Place your tree in the center of the hole. Make sure it’s stable before letting go and taking a step back. You can backfill a tiny portion of soil and tamp it against the root ball with your feet. Trust me, I’ve seen a few trees fall down and have broken limbs during this step.  After the tree is standing upright in the hole, verify it is positioned correctly: centered, upright and plumb, and at a height where the trunk flare is at or slightly above the surrounding grade. Make adjustments to your hole if necessary. You may or may not have to take the tree of out of the hole. 

5. STABLIZE YOUR TREE! If you’re satisfied with the general shape of your hole and with the general placement of your tree, stabilize your tree a little more to prepare for the next step. Backfill some of the dug-up soil to the bottom of the root ball and tamp it down with your feet once more until the tree feels relatively secure and in-place. The tree may move during this, so when you’re finished, triple check your work and make adjustments if necessary. 

6. REMOVE THE TWINE, TOP 1/3 OF BURLAP, AND TOP 1/3 OF WIRE CAGE. Remove the twine around the trunk, remove the top third of the burlap and remove the top third (approximately) of the wire cage. The purpose of removing these materials is to prevent damage to the trunk and buttress roots as they grow over time. Removing the twine, burlap and wire cage is the subject of much debate amongst landscape contractors, tree producers, and arborists. In an effort to be brief, my recommendation to remove the top third of the wire cage, the exposed burlap (approximately the top third), and the twine is a balance between ensuring root ball stability, new tree survivability, and planning for the long term health of the tree over the next hundred years. There may be some instances, like planting new evergreen trees in exposed/windy sites where it may be acceptable to leave the entire wire cage, burlap and twine intact for one full growing season before returning to remove it later. You will likely need some type of wire cutter or saw to remove a portion of the wire cage, so be sure to wear proper PPE including safety glasses and gloves! This step is also an annoying opportunity for the tree to shift around, so quadruple check the tree’s placement and make adjustments if necessary once you are done!  

   Optional: If you’re planting a tree in summer or drought-like conditions, I would recommend watering the hole to add moisture back into the soil. You only need to add enough water to turn the soil dark brown, avoid any pools of water. 

7. BACKFILL THE SOIL! You can use only the dug-up soil if you’d like, but you can also optionally mix in a 1:1 ratio of dug-up soil and soil amendments such as compost, manure, or topsoil. It’s your choice and the level of necessity will vary from planting site to planting site. If you want to reduce resource competition for the tree and save yourself some weeding, you can filter out any grass you find during this process. As you’re backfilling, lightly tamp the soil to remove air pockets with your hands or feet but be careful not to overly compact soil as pore space is needed for water and oxygen. You don’t want air pockets where you can hide your penny collection, but you also don’t want construction-grade compacted soil. 

8. MULCH AROUND THE TREE! Apply a 2-4 inch layer of organic wood chip mulch in a circular ring around the trunk of the tree. The width can vary from options such as 1 foot wide, as wide as the dug-up grass, or as wide as the canopy drip line of the tree (the farthest point that leaves or branches extend out to). Avoid covering the root flare of the tree. The mulch should match the surrounding grade of the planting site and not be mounded up in the shape of a volcano. Mulch does a great job of retaining moisture around newly planted trees in addition to reducing competition from weeds, regulating soil temperatures, reducing soil compaction and adding nutrients to the soil. Linked is my previous ARBOR ED™ article on how to create a tree mulch ring including all of its benefits! 

9. WATER AROUND YOUR TREE! Watering a newly planted tree correctly is as important as selecting the right tree. Watering is the single most important maintenance factor in the establishment and success of planting a new tree. The best way to water a tree is slowly and deeply so that water is trickling down into the root ball of the tree and not washing away into the lawn. A newly planted balled-and-burlapped tree should be watered at the time of planting and then once a week until temperatures are consistently below freezing. Watering in this same fashion should resume when the tree breaks dormancy and leafs out the following spring. It generally takes 2 - 3 growing seasons before a balled-and-burlapped tree is established and can fend for its own water. Establishment could take longer with larger trees. For more information on watering, see my coworker, ISA Board Certified Master Arborist® TJ Nagel’s ARBOR ED™ article on proper tree watering!  

10. PRUNE YOUR TREE! If a tree could only be pruned once in its life, pruning at planting is the time to do so. The overall goal of pruning at planting is to improve the structure of the canopy, to remove crossing and broken limbs, or to reduce/remove upright limbs that might be competing to be the central dominant leader. Note: It is equally important not to over-prune a newly planted tree, as having the appropriate amount of leaf area in the canopy next season is essential to maintaining good health and vigor. 

11. REMOVE TAGS AND ENJOY YOUR TREE! Your new tree is now planted! Enjoy it! If there are any tags on the tree and you have not already removed them, you can remove them now!  

12. OPTIONAL: PROTECT YOUR TREE! Protect your tree from mechanical damage. This step may not be necessary for every newly planted tree. If you live in an urban area without deer and have large, generous planting beds free of turf, you can likely skip this step. When planting in rural areas, TJ often recommends using some sort of deer protection to protect the trunk of trees until they have surpassed 8-10 inches in diameter. You can use a 4-foot-tall wire fencing cut into a 7-8-foot length and then then wrap it around the tree. In addition to protecting the trunk, the fencing also makes it more difficult for deer to feed on lower limbs. Trunk guards or corrugated drainpipe can also work to protect tree trunks, but they must be removed before the heat and humidity of the summer. I also recommend trunk protection for folks that have trees in areas where turf is tightly managed with large, fast-moving mowers and string trimmers. 

Video

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In Conclusion…

Now that your tree has been planted, the next, most important step will be to properly water it! Watering can vary drastically based on tree size and season. If I had to best explain it in 1 sentence, it would be to water a tree slowly through some type of drip irrigation system (such as a tree watering bag, low pressure hose, or watering bucket) in the morning or evening (to minimize evaporation) anywhere from every day to every other day (depending on the season and amount of sunlight the tree receives daily). Other maintenance recommendations that can be optional or highly recommended depending on the tree and planting site would be to create a tree mulch ring (if you have not done so already), add deer protection, and/or stake the tree! Below are articles on some of these mentioned topics!  

ADDITIONAL ARBOR ED™ ARTICLES!

Enrique Arayata I Media Production Manager, Russell Tree Experts

Enrique is an ISA Certified Arborist® and FAA Certified Remote Pilot. In his free time, he enjoys working out, hanging out with his family and girlfriend, video production, photography, cars, technology, and cooking. Enrique has a BA in moving image production with a double minor in film studies and studio art specializing in photography from The Ohio State University, and an AA in web graphic design from DeVry University. His favorite tree is the Kwanzan cherry tree.

Giving Away 1000 Free Trees for Arbor day 2025!

Happy early Arbor Day! Arbor Day is this Friday, April 25th, 2025, and it is a holiday to celebrate trees and encourage everyone to plant more trees!

This Arbor Day, Russell Tree Experts will be giving away 1,000 FREE tree saplings to the public! Just stop by our Westerville office or Birdie Books (Uptown Westerville) to pick up your free tree saplings! There will be various trees of different growing speeds, mature sizes, sun preferences, and notable fruits, flowers, and foliage colors to choose from:

1. Bur Oak

2. Eastern Redbud

3. Tuliptree

4. American Persimmon

5. Shagbark Hickory

6. Black Gum

ISA Certified Arborists® will be available at pick-up for any help picking out your tree and to discuss the do’s and don’ts when planting your tree(s) at home! If visiting Birdie Books, also check out their Arbor Day book collection to learn more about our favorite thing…. TREES! We’re excited to see you soon and plant happy trees!

Date:
Friday, April 25th, 2025

Time:
10:00 AM to 4:00 PM

Locations:

Russell Tree Experts: 3427 E Dublin Granville Rd, Westerville, Ohio 43081

Birdie Books: 74 N State St. Westerville, Ohio 43081

TREE PLANTING RELATED VIDEOS

10 Trees to Add Spring Color to Your Landscape!

By Mike McKee
ISA Certified Arborist®
April 17, 2025

Flowering trees can be a great addition to any landscape. There is an unlimited range of options to add that splash of color to your property. The list is very large so I will pick 10 of my favorites that I have planted over my 35+ year career as an ISA Certified Arborist®. Flowering trees not only add a variety of colors, but additionally fragrance and many environmental benefits to pollinators, birds, and more! The timing of the blooms can be spread over several months with proper selections. There are many options among these genera, but I will concentrate on my favorites and best performers. The trees discussed in this article will stay in the small-to-medium size range.

1. Red Buckeye

I will start with one of my personal favorites, the red buckeye. Blooming in the April to May timeframe, this tall red blossom display is hard to beat in your landscape. This ovular shaped tree will produce red upright panicles that average 4 to 8 inches in length. This will make for a great specimen tree in your yard! If you’re an Ohio State fan, they will eventually produce buckeyes as well!

Common Name: Red Buckeye

Scientific Name: Aesculus pavia

Mature Height: 10 to 20 feet

Mature Width: 10 to 20 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Green leaves with red flowers

Other noteworthy characteristics: Brown buckeye nuts. Brown leaves in the fall.

2. Flowering Dogwood

Dogwoods can be one of the most popular trees in central Ohio landscapes. There are many varieties which cover a wide color spectrum, mainly whites, yellows, pinks, and even some reds. These are also trees that can have all season interest due to their bark character, showy fruit, and vibrant fall color display. Cornelian cherry dogwood will be one of the first trees to bloom in the spring with small yellow flowers, but the species I prefer is flowering dogwood with its white spring bracts.

Common Name: Flowering Dogwood

Scientific Name: Cornus florida

Mature Height: 15 to 30 feet

Mature Width: 15 to 30 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Green leaves in the spring with white flowers.

Other Noteworthy Characteristics: Red to purple fall color. Persistent red fruit in the winter.

3. Okame Cherry

Another of my favorite early flowering trees would be the Okame cherry. This tree typically blooms in March with vibrant pink flowers. This too is a compact tree that should stay under 25 feet tall. This tree was made famous with its display in Washington DC. It has a mild fragrance and attracts many pollinators.

Common Name: Okame Cherry

Scientific Name: Prunus x okame

Mature Height: 15 to 25 feet

Mature Width: 15 to 20 feet

Sun Preference: Full Sun

Spring Foliage Color: Pink flowers

4. Allegheny Serviceberry

Another tree with all season appeal would be the serviceberry. There are a few species and many cultivated varieties of serviceberry, but I prefer the Allegheny serviceberry. It produces early spring white flowers followed by edible fruit and finally, brilliant fall color!

Common Name: Allegheny Serviceberry

Scientific Name: Amelanchier laevis

Mature Height: 15 to 25 feet

Mature Width: 15 to 25 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Green leaves with white flowers

Other Noteworthy Characteristics: Reddish orange fall color

5. PRAIRIFIRE CRABAPPLE

The crabapple is another longtime favorite among central Ohio landscapes. There are more varieties than I can count so I will just list a few of my favorites. If you are looking for white flowers, you cannot go wrong with Adirondack. My favorite pink choice would be prairiefire, with strawberry parfait coming in a close second.

Common Name: Prairifire Crabapple

Scientific Name: Malus x ‘Prairifire’

Mature Height: 15 to 20 feet

Mature Width: 15 to 20 feet

Sun Preference: Full Sun

Spring Foliage Color: Spring maroon leaves with pink flowers

Other Noteworthy Characteristics: Green leaves with red veins in the summer, bronze leaves in the fall

6. Saucer Magnolia

Next on my list are magnolias. Once again, there are too many varieties to list, but the longtime favorites are the saucer magnolia, which has pink flowers, and the star magnolia which has white flowers. The saucer magnolia typically blooms around late March to early April and puts on quite the show! If you are looking for fragrance, make sure you add a sweetbay magnolia to your landscape!

Common Name: Saucer Magnolia

Scientific Name: Magnolia x soulangeana

Mature Height: 25 to 30 feet

Mature Width: 25 to 30 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Green leaves with pink flowers

7. Eastern Redbud

Another early blooming favorite that is being produced with several new cultivated varieties is the eastern redbud! They are being developed with a variety of leaf colors, variation in bloom color, and growth habit as well, such as weeping. A classic selection that you cannot go wrong with is the straight species of eastern redbud with its beautiful pinkish purple flowers in the spring! This is the early flowering tree that is often seen along the edge of the woods in natural areas as well as in many landscapes. It flowers at a similar time as magnolia trees but is less likely to be damaged by freezing temperatures and Ohio’s wishy-washy weather.

Common Name: Eastern Redbud

Scientific Name: Cercis canadensis

Mature Height: 20 to 30 feet

Mature Width: 25 to 35 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Dark green heart-shaped leaves with pinkish purple leaves

8. Washington Hawthorn

One of the later bloomers in the spring would be the Washington Hawthorn. This is another tree that can have all season interest with the white flowers, fragrance, red fruit, and fall color, making this a great selection for your landscape. Its abundant red fruit supports many pollinators, birds, and more!

Common Name: Washington Hawthorn

Scientific Name: Crataegus phaenopyrum

Mature Height: 25 to 30 feet

Mature Width: 15 to 25 feet

Sun Preference: Full Sun

Spring Foliage Color: Green leaves, white flowers, and red fruit

Other noteworthy characteristics: Orange and scarlet leaves in the fall

9. IVORY SILK JAPANESE TREE LILAC

Next on this list is the ivory silk tree lilac. This is a plant that produces a creamy/white plume, usually long after other trees have bloomed.

Common Name: Ivory Silk Japanese Tree Lilac

Scientific Name: Syringa reticulata

Mature Height: 20 to 30 feet

Mature Width: 15 to 25 feet

Sun Preference: Full Sun

Spring Foliage Color: Dark green leaves with creamy white plumes

Other Noteworthy Characteristics: Golden to bronze fall color. Cherry-like bark that is attractive in the winter.

10. American Witch Hazel

Last (or first) on this list is witch hazel! Some witch hazels bloom in early spring such as Jelena and vernal witch hazel, but a personal favorite (and classic) is the American witch hazel. This plant blooms in the fall with beautiful yellow color that persists into winter, sometimes up to early spring.

Common Name: American Witch hazel

Scientific Name: Hamamelis virginiana

Mature Height: 15 to 25 feet

Mature Width: 15 to 25 feet

Sun Preference: Partial to Full Sun

Spring Foliage Color: Green leaves that turn yellow in the fall and winter

This is just a small list of trees that could add a splash of color to your landscape. With a little research and planning, you can have color, fragrance, fruit, and other interesting characteristics throughout the year! Choose wisely and plan for the mature size of your plants when making selections and picking planting locations.

Please review our other articles on planting, mulching, watering, and other related topics before adding additional trees to your landscape in the coming year. For a free tree quote by one of our 20+ ISA Certified Arborists®, visit RussellTreeExperts.com/Quote or speak with our friendly, local office staff at (614) 895-7000!

ADDITIONAL ARBOR ED™ ARTICLES!

Mike McKee | Regional Manager, Russell Tree Experts

Mike graduated from Hocking College in 1983 with a degree in Natural Resources specializing in urban tree care. He has been an ISA Certified Arborist® since 1991. Mike started his career in the private industry in 1985 before becoming a municipal arborist in 1989. He retired after serving thirty years before joining us at Russell Tree Experts in September 2018. His love of trees has never waned since trying to climb up the ridges of the massive Cottonwood tree in front of his childhood home.

The Forest Pansy Redbud!

By Walter Reins
ISA Certified Arborist® OH-5113A
April 10, 2025

Forest pansy redbud leaves in the spring

In our Ohio landscapes, we have several common options for planting trees that reach a small-to-medium size in maturity, including magnolias, crabapples, cherries and Japanese maples. Another tree that fits that size category and is commonly found in many landscapes is the eastern redbud (Cercis canadensis). Redbuds are known for their beautiful display of flowers in the early spring, typically before leaves fully emerge. But while the flowers grab our attention, the foliage could be considered fairly typical and undistinguished. One variety of redbud that can stand out for both its flowers and foliage is the forest pansy redbud (Cercis canadensis ‘Forest Pansy’)! Let's take a closer look at this tree and why it might be a great option for your landscape!

Forest pansy redbud leaves in the fall

The forest pansy redbud is a cultivar (cultivated variety) of eastern redbud. Cultivars, incredibly common among many of our landscape plants from trees to shrubs to perennials, are versions of plants that are not commonly found in nature. This can be a different color of flower, variegated foliage, lack of fruit production, difference in shape or habit, or many other characteristics. In the case of the forest pansy redbud, the striking difference from the normal species is the foliage color. The forest pansy redbud’s leaves emerge in the spring with a purple to burgundy color. As summer approaches and the foliage matures, the color of the leaves can deepen to a dark reddish-purple. In autumn, as the color pigments of the foliage break down, rich yellows and golds appear and contribute to the beauty of the transitioning landscape. As with the normal species of eastern redbud, the forest pansy cultivar also has the much loved clusters of pinkish flowers that emerge directly from the stems prior to the leaves emerging in spring, giving us an early display of color when many other plants still appear to be dormant.

Forest pansy redbud flowers in the spring

Forest pansy redbuds are hardy in USDA zones 5-9, making them a good choice for Ohio. They are generally tolerant of less than ideal soil conditions, but like most trees, prefer some initial amending of the soil if needed for proper soil pH, nutrients, and drainage, as well as ongoing addition of leaf compost or supplemental fertilization for optimal growth. The red pigments in the leaves will be deeper and richer with ample sunlight, so while the tree can tolerate a semi-wooded or shadier setting, substantial shade can create leaves that take on more of a green appearance (as a fun side note - this correlation between sunlight and richness of color generally applies to most plants with variegated or colored foliage!).

Forest pansy redbud info card at Oakland Nursery

The forest pansy redbud is typically free of pests and diseases when properly planted and located in the landscape. It has a mature height of 20 to 25 feet and a mature crown spread of 15 to 20 feet. This makes it a good candidate for planting in front and backyards, where it can grow large enough to provide some shade to a front walkway, south facing window, or backyard patio, but stays small enough to not overtake a home or outcompete adjacent lawn areas or landscape beds for sunlight and water. Because of its striking foliage throughout the growing season, it makes a wonderful specimen tree or focal point in the landscape when planted singly, rather than in groupings.

The forest pansy redbud tree can be a great option for your landscape if you’re looking for a medium sized tree that’s tolerant of a wide range of conditions. As always, proper planting is essential for the long term health and success of any tree. Contact us if you need any guidance, referrals, or recommendations for proper tree planting, including species selection, location, and site requirements. And as always, for a free tree work quote by one of our 20+ ISA Certified Arborists®, visit RussellTreeExperts.com/Quote or speak to our friendly, local office staff at (614) 895-7000!

ADDITIONAL ARBOR ED™ ARTICLES!

Walter Reins I Regional Manager, Russell Tree Experts

Walter became an ISA Certified Arborist® in 2003 and has a degree in landscape horticulture. He has 25 years of experience in the tree and landscape industries and originally began working at Russell Tree Experts in 2011. Walter is also the owner/operator of Iwakura Japanese Gardens, a small design/build/maintenance firm specializing in Japanese-style gardens, and also offers responsible tree planting for all landscapes.

How to Protect Trees Before, During, & After Heavy Construction!

By Cody Gray
January 23, 2025

What is soil compaction and how can this affect the trees growing on your property? In this article we are going to cover the “do’s” and “don’ts” during the construction process to avoid soil compaction on the property. We’ll also be peeking into soil science as well as ways to regain healthy soil composition.  

Soil compaction is caused when soil particles are pressed together, reducing pore space. Think of this like making a snowball - as you take a scoop of snow and press it together, it becomes hard and dense. The previously light and fluffy snow is now firm and sheds water. The same phenomenon is true with soil. As these particles are pressed together, air and water become scarce. With reduced pore space, water infiltration is much slower, and drainage becomes increasingly poor and insufficient. In addition to the soil’s inability to move and drain water, the exchange of gases is slowed down significantly. In poorly drained soils, the composition can turn hard and arid, causing a tree’s penetrating roots to struggle in seeking water.  

Compacted Soil

Porous Soil

Wooded lots offer extremely beautiful home sites. However, if approached improperly from start to finish, what could have been a serene place to kick your feet up at the end of a long day can slowly turn into a hazardous environment full of dead and declining trees. It’s no secret that heavy equipment is used to clear plots of land for both residential and commercial purposes. These pieces of equipment are often heavy and can cause substantial damage to the soil composition when extra care is not taken. However, there are ways to protect the trees you desire to keep if you are aware of some basic tree biology. In terms of spread, a tree’s roots mostly occupy the canopy drip line of a tree. The canopy drip line of a tree is the outermost circumference of the tree’s canopy in relation to the ground. A tree’s roots occupy this entire area and often extend two to four times the radius of the drip line. In terms of depth, most tree roots can be found in the first six to twenty-four inches of soil. This is important to know because this is where long-term root damage can occur if proper preventative measures are not taken. 

A video example of a land clearing project for a new construction home. Heavy equipment was used and soil was likely compacted.

When selecting the building site, it is important to choose an area as far away from the preserved trees as possible. However, at times this may not be possible due to the lot layout, construction needs, etc. There are ways to improve the likelihood of saving these trees inside of the construction zone. Setting up a tree protection zone can be accomplished by protecting the drip edge of the tree you plan to save. The idea is to minimize or prevent any travel of heavy equipment over this area to protect the tree’s valuable roots. One of the most effective ways to protect this precious area is by using T-posts, zip ties and a few rolls of orange barrier fence often referred to as a “snow fence”. The first step in this process is to walk out and mark the approximate drip edge of the tree. You can use orange marking paint on the ground if this helps. Next you will need to drive a T-post every four to five feet around the circumference of the drip line. Once you have traced the entire drip line of the tree, you will begin stringing your orange barrier fence and zip-tying it to your T-posts. This process is simple yet effective for keeping people as well as machines away from the root zone. Additionally, this will help limit the potential for damage to the trunk of the tree. If access is an issue and you are unable to successfully barricade the drip edge of the tree, another option is to use some sort of matting. This can be done with many different products. The simplest form of matting is plywood but whatever solution you use, this significantly reduces ground pressure, which reduces the effects of soil compaction.  

Tree Protection Zone!

Following the construction process, it is important to do a final walkthrough to determine if the grade has been changed. Any excess fill that may have been added inside of a tree’s canopy drip line should be minimized or avoided completely. A very small amount of fill used to fill in tiny divots or to lightly level the lawn is okay and unlikely to cause serious damage. A significant amount of excess fill or grade change can cause reduced oxygen and water infiltration for a tree's roots. A tell-tale sign is soil buildup around the root flare of the tree trunk. You can also take before-and-after photos and compare. If excess soil is present, it is important to remove it as soon as possible. The effects of soil compaction are not immediately noticed and often take months or years before it becomes apparent that something may be wrong. Unfortunately, by the time you notice that a tree is in decline, it is likely too late. Some key characteristics to look for include loss of leaves and premature leaf discoloration during the summer months as well as dead and decaying branches. It is not uncommon for one of our ISA Certified Arborists® to inspect a property containing a declining tree due to construction or renovation that occurred months or years in the past. Oftentimes this is discovered through a quick conversation with the property owner or when observing soil that is either compacted or covering a tree trunk’s root flare. 

There are ways to improve soil composition following compaction if it is caught quickly. One of the most effective ways is by using an air-spade. An air spade is a tool that uses compressed air to loosen the soil around the tree’s roots. An arborist will push the tool into the ground around the tree’s root system and force air into the compressed soil, causing the pore space to increase. This is a non-invasive way to expose the roots to much needed water, oxygen, and nutrients. Another simple yet effective way to help with previous soil compaction is to mulch a tree. Removing 2 to 4 inches below ground level and backfilling with porous mulch can minimize the impact of soil compaction. There are also many benefits to mulching beyond just increased pore space.  

Porous (Left) vs. Compacted (Right)

In conclusion, remember to pick a building site that requires as little tree removal as possible. If there is a tree that is in question, it is much easier to remove the tree prior to construction and it will often cost less to do so. Complete a walkthrough with your contractors, express your concerns for the trees you plan on saving, and be certain to create your tree protection zone(s). This will take a little time in the beginning of the project but can end up saving thousands of dollars over the years to come. If you follow these steps and still end up with some soil compaction, don’t fret as there are still options. Reach out to your local arborists and inquire about air spading, tree mulch ring installations, frequent watering, or other plant healthcare options that might be recommended after an inspection. I can assure you that if you take the time in the early stages of the land clearing and construction process, the survival rate of your trees will increase significantly. If you are interested in a free tree quote by one of our 20+ ISA Certified Arborists®, call us at (614) 895-7000 or visit RussellTreeExperts.com/Quote 

ADDITIONAL ARBOR ED ARTICLES!

Cody Gray I Senior Division Supervisor, Russell Tree Experts

Cody Gray is our Environmental Division Senior Division Supervisor and has been at RTE since 2016. He has worked around trees since 2013. He graduated from Hocking College with a major in forestry and is certified with aerial rescue, EHAT, first aid, CPR, and OSHA30. In his free time, Cody is an avid outdoorsman and enjoys spending time with his family. His favorite tree is the white oak because of their exceptional durability, beautiful grain patterns, and longevity.

It’s Easy as G-D-D (Growing Degree Days)

By Lindsey Rice
ISA Certified Arborist® OH-6739A
January 9, 2025

If you are a client of Russell Tree Experts and have us care for your trees, you’ve likely heard us use the term “growing degree day” or GDD. The concept of a growing degree day is basically how many units of heat have been accumulated within a 24-hour period. Any day with a mean temperature (average of the maximum and minimum temperature) over the “threshold temperature” of 50 degrees, growing degree days are accumulated. A threshold temperature is a temperature at which a specific plant or insect can progress in its development or life cycle. Different organisms have different base temperatures; however, 50 degrees Fahrenheit is considered acceptable for all plants and insects.

Calculating growing degree days can be complex to varying degrees. The simplest method is to subtract the base temperature from the mean temperature for the day and then add it to the previous day's growing degree day total.

Example:

It is April 11th. The average temperature is 61 degrees. Yesterday, the running total of GDD was 214. Subtracting the base temperature of 50 from the mean temperature of 61 degrees, we would arrive at 11 degrees. We would add that to yesterday's running total (214+11), and today’s current GDD is 225.

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What information can we learn from knowing the growing degree day? Plant experts and entomologists have observed that the accumulation of heat causes development to proceed. For any given insect, its eggs will hatch, or an adult will emerge at precisely the same growing degree day every year. The date can vary from year to year since the temperature is not the same every day of the year. Below is a graphic of the growing degree day on the same date, April 11th, for the past fourteen years.

(https://weather.cfaes.osu.edu/gdd/summary.asp):  

Since we know that plants and insects do the same thing on the same approximate GDD every year (not necessarily on the same date), we also know when to apply certain treatments for optimal effectiveness. Additionally, we can use plants as a “phenological indicator” to understand when certain insects will be active. Using our example of April 11th and GDD of 225, Serviceberry (GDD 219) and Common Chokecherry (GDD 221) should both be in full bloom. Various adult leafminers will also be emerging around this time (birch leafminer – GDD 215, elm leafminer – GDD 219, alder leafminer – GDD 224).

Some people have even taken it further and planted phenological gardens! Farmers have used this practice for centuries to know when to plant certain crops and vegetables and when to look for specific pests. Here are a few rules of thumb:

• Plant potatoes when the first dandelion blooms

• Plant peas when forsythia blooms

• Plant radishes and spinach when crocus is in bloom

• Plant carrots and beets when daffodils bloom

• Plant bush beans when apple trees bloom

• Plant annual flowers and squashes when lilacs are in full bloom

These were developed as a way of measuring growing degree days before the formal calculation of growing degree days existed, but they achieved similar results.

Entomologists work hard daily to figure out the growing degree day of certain active insects and pests to improve “best practices” observed in horticulture and arboriculture. One insect we are watching closely is the nitidulid beetle. These beetles have been known to carry a fungus that causes oak wilt, a deadly fungal disease of oak trees. As we learn more about these beetles, we can implement more effective management practices to ensure the safety of everyone’s oak trees! For now, we go off of the best information available to us. You can learn more how Russell Tree Experts handles oak wilt by reading here!

I am proud to be part of the arboriculture industry. The industry is very receptive to better and new information as knowledge is developed and discovered. The world is evolving and I’m happy that Russell Tree Experts prides itself on keeping up with the times and staying well-informed on essential tree issues. As we learn more, we will share with you all as well. As always, thank you for your time, and I hope you all do your best to be a tree advocate in your community. To request a free tree work quote by one of our 20+ ISA Certified Arborists, give us a call at (614) 895-7000 or visit RussellTreeExperts.com/Quote!

ADDITIONAL RESOURCES ON GROWING DEGREE DAYS

The Ohio State University: https://weather.cfaes.osu.edu/gdd/glossary.asp

Smithsonian Gardens: https://gardens.si.edu/learn/blog/gardening-guided-by-phenology/

ADDITIONAL ARBOR ED ARTICLES!

Lindsey Rice | Special Projects Manager, Russell Tree Experts

Lindsey joined Russell Tree Experts in 2015 with a B.S. in Agribusiness and a minor in Horticulture from The Ohio State University. Growing up in Northwest Ohio, she participated in various sports, band, and FFA which ultimately inspired her love for the tree industry. In her free time she loves to spend it outdoors with her husband and daughters.

ISA Certified Arborist® OH-6739A

Call OUPS So You Don't... Oops!!

By Joe Gabrielse
December 19, 2024

Are you about to start digging in your yard for a project such as to plant a tree or to grind out a tree stump? Before you begin, it's vital to prioritize safety by taking the necessary precautions to protect yourself and underground utility lines. One key step you should never overlook is calling the Ohio Utilities Protection Service, commonly known as OUPS. 

An example of a gas line marked in yellow.

811 is the national hotline for "Call Before You Dig," allowing homeowners and professionals to request free marking of underground utility lines. By calling 811 prior to digging, you can prevent accidental damage to vital utility lines like gas, electric, water, sewage, and telecommunications. Examples of digging projects where you can benefit from calling OUPS are planting a tree, grinding a stump, digging a new flower bed, putting in a new shed, laying a new driveway, installing a post for a new mailbox, building a retaining wall, and more. If you are utilizing Russell Tree Experts to care for your trees and digging is required such as in the case of stump grinding, we will take care of this process for you and call OUPS ahead of time!

Upon dialing 811, you will be connected to a local center. A representative will gather details about your digging project, such as location and depth of excavation. The center will then inform relevant utility companies who will then dispatch technicians to mark their underground lines with flags, paint, or both. In some cases, you will also receive an email with a summary containing a birds-eye view of the property with color coded markers as to where any lines may be located.

Advantages of Contacting 811 Before Digging

The blue oval indicates the location of a gas line that we need to be extra precautious around.

There are numerous benefits to calling 811 before digging, such as the following:

1. Compliance with Regulations. Many states mandate calling 811 to prevent harm to underground infrastructure.

2. Peace of Mind. Taking necessary safety precautions can provide peace of mind throughout your digging project and minimize the chances of stress and headaches.

3. Financial Savings. Preventing damage to utility lines can save you from costly repair expenses.

4. Enhanced Safety. Marking utility lines helps prevent potentially hazardous incidents.

Depending on the particular tree, a stump could be ground anywhere from approximately 4 to 16 inches below ground level.

Proceeding with digging without calling 811 can lead to severe outcomes. Accidentally striking a buried utility line can disrupt your project and result in headaches, expensive repairs, injuries, or even fatalities. Avoiding these dangers is as straightforward as dialing 811 before you commence digging. It’s free! 

One detail to be cautious of is that privately installed lines or pipes might not be reported to OUPS, therefore leading to those lines being left unmarked. It would be up to you to mark or be made aware of to prevent damage to said unmarked lines. Examples of unmarked lines could be an electrical line to an exterior light post, irrigation lines, and invisible dog fences.

At Russell Tree Experts, we utilize OUPS quite literally every single day. Whenever a customer requests stump grinding services, our stump grinders call OUPS a few days ahead of time so that way our machines can focus on the stump and avoid damaging any lines. 

Russell Tree Experts offers stump grinding services. Before any stump is ground, we call OUPS to mark any nearby lines that could pose an issue.

For larger tree work projects such as on federal and state property or along highways and powerlines, we contact OUPS to request any and all lines to be marked. Whenever we are using heavier equipment such as CMIs, ASVs, or Bobcats, we are sometimes asked to provide specifications such as gross vehicle weight, track width, lengths of tracks on the ground, and distance between tracks to ensure that there is no risk of damage to underground lines even during movement of our machines. Some pipes and lines can be located 18 to 24 inches below ground level. With a machine that weighs 85,000 pounds, even just driving 2 feet above the line’s location could cause damage. If the pipe is unavoidable and a piece of equipment must cross its location, we build an “air bridge” using timber mats to cross the line safely and to eliminate the risk of damage. When a line is avoidable and no tree work or equipment needs to occur nearby, we still like to have the line marked and we will set a minimum approach distance such as 50 feet so that way our crew members know not to come anywhere close to the line’s location.

A balled-and-burlapped tree can require a lot of digging in order for it to be properly planted.

The examples above may not be relatable to you from day-to-day on your private property, but tree planting can! According to the Arborists’ Certification Study Guide, a saucer shaped planting hole two to three times the width of the root ball is recommended for optimal tree planting. The depth of said hole is going to be approximately the height of the root ball, which could be upwards of two to three feet tall for a large balled-and-burlapped tree. This area is definitely deep and wide enough to where the risk of damaging a line could be high. A simple and free 811 call to OUPS could provide you the peace of mind of planting your tree with no risk (not including privately unmarked lines)!

In conclusion, calling 811 before digging is a simple yet critical measure to ensure the safety of your excavation work. Making this call can help prevent accidents, legal complications, and unnecessary expenses. Remember that safety is paramount, so don't forget to contact 811 before picking up that shovel. Be safe and happy digging!

ADDITIONAL ARBOR ED ARTICLES!

Joe Gabrielse I Administrative Manager, Russell Tree Experts

Joe joined Russell Tree Experts in 2022 with a background in dispatching of commercial vehicles and project management. He enjoys spending time with friends and family, attending different sporting events, traveling, car shows, sports collectibles shows and video games.

The Sugar Maple

By Chris Gill
ISA Certified Arborist®
December 12, 2024​

The sugar maple tree (Acer saccharum) is one of my favorite trees and a beloved symbol of North American forests, renowned for its beauty and many uses. It is native across southern Canada, the midwest, and the northeastern US states. Known for its vibrant autumn colors, sweet sap, and high-quality timber, the sugar maple plays an essential role in the natural landscape, urban forest, economy, and cultural heritage of the northeastern United States.

The sugar maple tree grows best in hardiness zones 3 through 8. It has a slow-to-medium growth speed and will grow to a mature height of 60 to 75 feet with a mature width of 40 to 50 feet. Sugar maple trees grow well in well-drained soil and in partial sun, but will perform best in full sun conditions.

The sugar maple is one of the most visually captivating trees, especially during the fall when its leaves turn to brilliant shades of red, orange, and gold. Each autumn, forests, yards, and parks where sugar maples grow become vibrant canvases of color. Beyond its autumn display, the sugar maple brings beauty throughout the year. In spring, delicate clusters of yellow-green flowers bloom, signaling the arrival of warmer weather. By summer, the tree’s broad canopy offers cool, welcoming shade, making it a favorite in parks along streets and in backyards. Even in winter, when its branches are bare, the sugar maple’s ovular architecture is a beautiful sight.

The sugar maples in my backyard are a constant source of joy to my family and me; my kids often collect the autumn leaves and we all appreciate the cool shade it provides during hot summer afternoons where we play with our dog.

The sugar maple’s value extends far beyond its visual appeal. It is also a tree of exceptional utility, benefiting industries and ecosystems. The sugar maple is the lifeblood of the maple syrup industry, which is both economically and culturally significant. In early spring, when temperatures fluctuate between freezing at night and above freezing during the day, sap begins to flow within the tree. This sap is collected through taps and boiled down to produce pure maple syrup. It takes about 40 gallons of sap to produce just one gallon of syrup, making the process both labor-intensive and rewarding. Sharing the resulting syrup with my family is a tradition whether drizzled on pancakes or used to sweeten a good recipe. I like to mix two tablespoons of maple syrup with a teaspoon of dijon mustard, ¼ teaspoon of dried thyme, and 1 clove of garlic, minced, for an excellent glaze on chicken or ham.

Sugar maple is also valuable for its timber. Known as "hard maple," its wood is highly durable with a dense grain that makes it resistant to wear. This strength makes sugar maple wood a popular choice for furniture, cabinetry, and flooring. It is especially favored for high-traffic areas such as gymnasiums and basketball courts where durability is crucial.

In addition to its strength, sugar maple wood is renowned for its beauty. Patterns like "curly" and "birdseye" maple — unique grain formations that resemble ripples or tiny eyes — are highly sought after by woodworkers. Musical instruments including violins, guitars, and pianos, are often crafted from maple wood due to its aesthetic appeal and due to the wood’s density enhancing sound quality.

Birdseye Maple Wood Pattern

Curly Maple Wood Pattern

The sugar maple also contributes to the health of ecosystems in numerous ways. Its dense canopy provides shelter for birds, mammals, and insects, while its seeds and buds serve as food for creatures such as squirrels and deer. In autumn, when the tree drops its leaves, the organic matter enriches the soil, promoting healthy plant growth.

Note the fall foliage containing greens, reds, oranges, and yellows!

The tree also plays a critical role in water regulation as its roots absorb rainfall and reduce runoff, helping to prevent flooding. Forests dominated by sugar maple trees stabilize soil and prevent erosion, especially on slopes and riverbanks. The tree’s ability to thrive in well-drained, fertile soils makes it a reliable indicator of a healthy forest.

While sugar maple is a great tree for aesthetics and practicality, it is now facing significant threats due to changing weather patterns and climate shifts. The species thrives in cool climates with predictable seasons and the recent shift in temperatures, along with changes in precipitation, is making it harder for sugar maple trees to survive and reproduce in many areas. Sugar maple trees require cold winters to produce sap. The ideal conditions for sap flow — freezing nights followed by warmer days — are becoming less consistent as winters grow shorter and warmer. Without these precise temperature swings, sap production is also decreasing, directly impacting the maple syrup industry. 

Rising temperatures are also forcing the sugar maple’s growing range to shift northward. Areas that were once ideal habitats for the tree are becoming too warm or dry, while colder regions farther north are now better suited to support new growth. This gradual shift threatens the cultural and economic identity of communities that have long relied on sugar maple forests. Scientists predict that if current trends continue, sugar maple trees may disappear from parts of their southern range, such as Ohio, Pennsylvania and New Jersey, within the next century.

Additionally, the increase in frequency and intensity of droughts have been particularly damaging to sugar maple. While the tree prefers moist, well-drained soils, extended periods of drought weaken its root system and make it more susceptible to pests and diseases. Invasive pests like the Asian longhorned beetle and certain fungi have expanded their range into sugar maple forests. These pests can cause severe damage (and often tree death), weakening the trees and making them more vulnerable to environmental stresses. Fortunately, the Asian longhorned beetle has not been found in central Ohio, highlighting the importance of maintaining strict quarantine zones and monitoring programs. Preventing its spread is crucial to protecting the region’s sugar maples (as well as several additional native genera) and the ecosystems and industries they support.

Russell Tree Experts offers a range of tree services to help preserve your sugar maple trees, including health assessments to identify stress factors, pest and disease management to help mitigate threats, and soil care programs to improve root resilience. With expert pruning, deep-root fertilization, and a detailed plan, we can attempt to mitigate these challenges. For a free tree work quote by one of our 20+ ISA Certified Arborists®, visit RussellTreeExperts.com/Quote or call (614) 895-7000!

ADDITIONAL ARBOR ED ARTICLES

Chris Gill I Regional Manager, Russell Tree Experts

Chris joined Russell Tree Experts in 2015 and has been in the green industry for over 15 years. When not at RTE, he enjoys spending time with wife & son, wakeboarding, and hunting. His favorite trees are the white oak & sugar maple for their beauty and uses beyond the landscape. Chris is an ISA certified arborist, EHAT certified, CPR and first aid certified, holds an ODA commercial pesticide license, and holds a tree risk assessment qualification (TRAQ).

The Persian Parrotia

By Walter Reins
ISA Certified Arborist®
November 19, 2024​

A Persian parrotia tree (Parrotia persica)

For a variety of reasons, there are certain trees that never seem to get the attention and use they deserve in our Ohio landscapes. The Persian parrotia is one of those trees. The landscape industry tends to rely heavily on a narrow variety of tree species and the Persian parrotia is often overlooked when considering planting options for the landscape. Let’s shed some light on this beautiful, adaptable, and underutilized option.

The Persian parrotia (Parrotia persica), also sometimes known as the Persian ironwood, is a deciduous tree native to a small range of temperate forests in the Middle East. It can grow up to around 30 feet in height with a mature width of 15 to 30 feet. The crown’s shape is generally round or ovular and you may encounter trees grown with either single or multiple stems. The mature size of this tree alone makes it a noteworthy species as this medium size at maturity is often hard to come by and is typically satisfied with trees like river birch or linden. The former often has major health issues with central Ohio’s urban soils. Parrotias tend to be tolerant of less than ideal soil conditions once established, making them a good choice for residential, commercial, and municipal landscapes. Consideration should still be given to location on any property with regard to overhead wires as a 30 foot tree may still be tall enough to interfere with these utilities.

Fall color of Persian parrotia. Note the ~4 different colors of its leaves!

In addition to a desirable size as an accent or shade tree in the landscape, parrotias feature attractive dark green foliage with a gentle serration along the leaf margin. Avid gardeners and tree enthusiasts may find that parrotia foliage resembles that of witch hazel and fothergilla. This is because all three of these species belong to the witch-hazel family (Hamamelidaceae). Fall color is among the best you can find, with blends of yellows, oranges, pinks, and reds that almost seem to glow at the peak of fall foliage season. After the leaves drop, the tree continues to provide winter interest with a beautifully smooth and mottled bark, not unlike the mature bark of crape myrtle or lacebark pine. Flowering in central Ohio occurs in late winter and is not particularly showy. Parrotias are cold hardy to zone 4 (5a), making it a great match for central Ohio winter temperatures.

When planting a parrotia, the selected site should receive full sun to partial shade. Even though the species is tolerant of a variety of soil conditions, including soil pH and somewhat poor soil structure, the site should be well drained and not prone to standing water. With proper location to accommodate its future mature size, correct planting methods, and aftercare, parrotias can be healthy and beautiful additions to an Ohio landscape for several or more decades. Best of all, they are readily found at Ohio plant nurseries and garden centers, making them a tree species that you shouldn’t have to go too far to find! Happy planting!

ADDITIONAL ARBOR ED ARTICLES!

Sincerely,

Walter Reins I Regional Manager, Russell Tree Experts

Walter became an ISA certified arborist in 2003 and has a degree in landscape horticulture. He has 25 years of experience in the tree and landscape industries and originally began working at Russell Tree Experts in 2011. Walter is also the owner/operator of Iwakura Japanese Gardens, a small design/build/maintenance firm specializing in Japanese-style gardens, and also offers responsible tree planting for all landscapes.

Pawpaw Cream Pie and I

By TJ Nagel
ISA Board Certified Master Arborist®
November 7, 2024​

When it comes to trees, I’ve got lots of favorites. I have a favorite deciduous tree - the Persian parrotia. My favorite evergreen tree is the lacebark pine. My favorite tree for fall color is the black tupelo. I even have a favorite smelling tree - the concolor fir (I love that the crushed needles smell like oranges). Today, I’m writing about my favorite native, edible fruit tree, the pawpaw! Keep reading if you like pie.

A pawpaw tree (Asimina triloba) in the fall!

If you’re not hip to pawpaws already, the next paragraph is required reading. If you have pawpaw trees in your landscape currently, have ever attended the Ohio Pawpaw Festival, have a pawpaw cookbook, own an article of clothing with a pawpaw printed on it, or have a pawpaw bumper sticker on your car, you can jump ahead to the pie.

Pawpaw (Asimina triloba), sometimes called custard apple, is a hardy and adaptable small tree, generally growing 15 - 25’ in height in the landscape, with a dense pyramidal shaped canopy (when grown in full sun). The leaves hang downward at an angle and give the tree a somewhat tropical appearance. The fall color of the leaves is a nice golden yellow. Maroon to purple flowers come out mid-spring and are pollinated by flies. Interesting side note: Some of the old timers I know hang meat in their pawpaw trees at the time of flowering to increase pollination as the meat attracts more flies. Pawpaw flowers give way to small fruits, 3 - 6” in length that somewhat resemble a banana and often form in clumps of 3 to 5. Depending on the tree, the fruit can ripen anywhere between late August and early October. Additional side notes: The pawpaw fruit is the largest fruit native to North America and the pawpaw tree is the host plant for the caterpillar of the zebra swallowtail butterfly. Good stuff!

Pawpaw fruit! Quarter for scale.

Pawpaw fruit is one of my favorite things to look forward to every year (up there with spring flowers and fall color). The fruit tastes similar to a banana, mango, pear but with more of a custard-like consistency. FYI, the fruit can often contain many large, lima bean-sized seeds, especially with wild picked fruit. The fruit also has a short shelf life, often lasting only a few days after ripening, which is why you don’t see pawpaws at Costco.

Several cultivated varieties of pawpaw exist now that have been selected for longer lasting and  larger fruit with less seeds. I personally recommend ‘Prolific,’ ‘Wells,’ and ‘Sweet Alice.’ These cultivated varieties can be difficult to source, but not impossible. Check in with the folks at Dannaher Landscaping in Galena who generally have several different varieties of pawpaw trees on hand. These are good friends of mine.

Collecting wild fruit is also cool and another reason to go out into the woods. In central Ohio, I typically find pawpaw trees growing naturally near the banks of Walnut Creek, Alum Creek, the Scioto River, the Olentangy River, and throughout wooded flood plains where it often develops a more open and leggy appearance. Near my office in Westerville, along the Alum Creek bike path, I have observed several pawpaw trees in excess of 30’ in height with decent fruit production. We’re getting closer to the part about pie.

Dad removing seeds from the pulp of a pawpaw with precision.

I first discovered pawpaw trees by accident while my brother and I were canoeing a multi-day trip down the Scioto River late summer 2006. We kept noticing the fruit reaching out over the river from Columbus to Portsmouth and we decided to bring some back home to our father. We really didn’t know what we had, but Dad figured out they were pawpaws and decided to save the seeds, which started some of our original trees. My brother and I have followed different paths growing up, but we both have become professional ISA Certified Arborists® and I think somehow it started with the power of the pawpaw. Almost pie time.

Since 2006, I have eaten pawpaw every which way. At the risk of sounding like Forrest Gump, I’ve had pawpaw ice cream, pawpaw candy, pawpaw beer, pawpaw bread, pawpaw salsa, deep fried pawpaw on a stick and everything pawpaw in between. Dad even invented the pawtini (a martini with a toothpick holding a slice of frozen pawpaw). Until recently, my preference for pawpaw provisions was just eating the pulp straight out of the skin with a spoon. If I’m feeling fancy, I might even chill the fruit first, cut it in half, and cover it with homemade whipping cream for an excellent dessert.

A couple of years ago a colleague sent me a recipe for pawpaw cream pie and it blew my mind! (Yes, it is now pie time.) I’ve been experimenting with different levels and ingredients ever since and today I present to you my final draft!  

T.J.’s Pawpaw Cream Pie Recipe

• ½ cup of sugar

• ⅓ cup of flour 

• 3 egg yolks, beaten (save the whites for the meringue topping)

• 3 egg whites

• 1 cup of milk

• 1 cup of heavy cream

• 1 cup of pureed pawpaw pulp

• 3 tbsp. of sugar

• 1 pinch of salt

• 1 baked 9-inch pastry shell

• Optional: ⅓ - ½ cup of chopped walnuts

Start by combining the sugar and flour. Add the beaten egg yolks, milk and cream. Mix well and add the pawpaw pulp and walnuts. The walnuts are not essential to the recipe but add some additional flavor and texture. Cook and stir constantly over a low heat until the mixture thickens. Let cool and then pour mixture into a baked pastry shell and cover with meringue. Make a meringue by beating the 3 left over egg whites stiff with 3 tbsp. of sugar and a pinch of salt. Bake at 350 degrees F for 12 - 15 minutes until meringue is browned.

I also make a true cream pie version of this pie following the same recipe except ditching the 3 egg whites and baking the custard and then adding homemade whipping cream to the top after the filling has cooled.   A simple and delicious recipe for whipping cream is to mix a half pint container of heavy whipping cream with ¼ cup of sugar and 1 teaspoon of vanilla.

Both of these versions are outstanding. If you like banana cream pie, you are going to love this recipe. I’m partial to the true cream pie version but full disclosure, most of my taste testing buddies prefer the meringue.

This recipe is a great way to use up several pawpaws at once as I often end up with fruit faster than I can eat it. Pawpaw is an underutilized tree in the landscape and I’m hoping that delicious pie will encourage you to plant one; although fruit production is better with two. Pawpaw is an easy tree to grow (I haven’t killed one yet) and it has no significant insect or disease problems. This tree will grow happily in a wide range of environments and tolerate some of the most challenging sites and conditions. I hope you can find a way to incorporate this great native tree into your landscape and I encourage you to share any pawpaw recipes, experiences or questions you might have with us at the bottom of this article. Look forward to hearing from you!

ADDITIONAL ARBOR ED ARTICLES!

Sincerely,

TJ Nagel I Scheduling Production Manager, Russell Tree Experts

TJ loves trees. He is an avid gardener and plant collector. TJ graduated from The Ohio State University with a B.S. in Agriculture with a major in Landscape Horticulture and minor in Entomology. TJ is an ISA Board Certified Master Arborist and well versed in Plant Pathology. TJ joined Russell Tree Experts in 2012.

Mulch Volcanoes & The Hidden Dangers

By Enrique Arayata
ISA Certified Arborist® OH-7252A
October 23, 2024

The kwanzan cherry tree in question.

Recently, I was talking to one of my neighbors about typical home and outdoor activities, which sparked the conversation about the kwanzan cherry tree in my front yard. He let me know that it was mulched incorrectly, which caught me off-guard seeing as I took mulching advice from my coworkers Lindsey, an ISA Certified Arborist®, and TJ, an ISA Board Certified Master Arborist®. I kept an open mind and asked him what was wrong and he informed me that it’s best to form a volcano-like shape up towards the trunk of the tree so that way the tree will absorb more water and to increase curb appeal. For him, since it looks more intentional and less natural, it shows that someone is caring for the tree. I communicated to him that multiple coworkers as well as the Arborists’ Certification Study Guide have conflicting information. He said he’s been doing it this way for decades and everything has been fine, completely ignoring the fact that his 50-60 foot tall sugar maple tree was removed due to heavy decay at the base of the tree. We agreed to disagree and went on with our days. Now, I’m not saying mulch volcanoes will cause your tree to decay and be removed, but I am saying that it is detrimental to a tree’s health and that this method of mulching needs to be addressed, stopped, and changed.

A mulch volcano. Note the lack of an exposed trunk flare and the mulch exceeding the height of the surrounding grade.

So what is a mulch volcano? A mulch volcano, also sometimes known as a mulch mound, mulch pyramid, or a mulch shield, is a circular volcano-shaped pile of mulch above ground level formed up to the trunk of a tree. Mulch volcanoes are created with good intention as tree mulching adds nutrients to the soil, aids in water retention, helps the tree outcompete other plants for resources, protects the tree from trunk damage by lawn mowers and string trimmers, minimizes soil compaction, and increases curb appeal. However, all of the aforementioned benefits apply only to properly mulched trees and mulch volcanoes are an improper form of mulching that eliminates most of these benefits. Most of the time, the person applying mulch to the tree does not even know about this incorrect practice. So if you have ever created a mulch volcano, know that I am not upset or mad. My goal is to educate and discuss the harms of mulch volcanoes and the proper ways to mulch a tree.

An example of stem girdling roots.

Limited Oxygen and Stem Girdling Roots

Mulch volcanoes bury the roots of a tree and simulate it being planted too deeply. This limits the availability of oxygen and water which can cause stem girdling roots, roots that wrap around the trunk of the tree in search of oxygen and nutrients and inevitably “choke” the tree. Stem girdling roots can lead to dieback, stunted growth, and delayed or shrunken leaves popping out in the spring. This can be treated via root collar excavation.

Limited Water

For a mulch volcano with compacted mulch, less water is actually retained and runs off to the bottom perimeter of the mulch. This results in less water availability for the tree as it may run off elsewhere on the property or be absorbed by grass and other plants instead of by the tree.

Excess Water and Bacteria

For better or for worse, mulch is great at retaining water. In the case of mulch volcanoes with porous mulch, this is bad because water can sit and dampen the trunk. Sitting water is bad for a tree because it can carry bacteria that can lead to disease.

Soil pH

Overmulching in this fashion may also limit nitrogen availability and detrimentally alter the soil’s pH. A change in pH outside the ideal range for the tree can lead to nutrient deficiency, chlorosis, stunted growth, defoliation, dieback, or even worse, the death of a tree.

Another mulch volcano. Note the tip dieback on the right side that could be a result of the mulch volcano. An in-depth inspection would be needed for confirmation.

Rodents

When mulch is piled high, it may be enticing to rodents as a form of shelter and concealment. They have also been observed to feed on the lower stems and bark of trees, leaving open wounds that could invite decay, disease, and pests. 

Aesthetics

Mulch volcanoes can make a trained eye who knows proper mulching practices cringe similar to nails on a chalkboard. They convey that the tree manager or mulch installer may be unaware of the best care for the tree. Depending on who you ask, mulch volcanoes are subjectively an eyesore and look goofy or out of place.

A tree mulch ring 12 feet in diameter.

Proper Tree Mulching

So how do you properly mulch a tree? Apply a level 2 to 4 inch deep layer of mulch at least 6 feet in diameter or up to the canopy drip line of a medium-to-larged sized tree. The exact size will depend on your preference or landscape limitations. Keep the root flare exposed and not in direct contact with any mulch. If water runoff is a concern, a small 1 inch tall, wall-like berm can be formed by hand around the perimeter of the mulch to encourage water to remain inside of the mulch. Linked below is my previously written Arbor Ed article on how to properly mulch a tree. It contains a video and even additional tips on how to create a crisp edge for enhanced visual appeal! I strongly encourage you to check it out. You can even follow along with the video when mulching your own tree! For those in central Ohio looking for other tree care needs, one of our 20+ ISA Certified Arborists® are happy to provide a free tree inspection and service quote!

Additional Arbor Ed Articles

Sincerely,

Enrique Arayata I Media Production Manager, Russell Tree Experts

Enrique is an ISA Certified Arborist® and FAA Certified Remote Pilot. In his free time, he enjoys working out, hanging out with his family and girlfriend, video production, photography, cars, technology, and cooking. Enrique has a BA in moving image production with a double minor in film studies and studio art specializing in photography from The Ohio State University, and an AA in web graphic design from DeVry University. His favorite tree is the Kwanzan cherry tree.

When Do I Call an Arborist?

By Mike McKee
ISA Certified Arborist®
October 3, 2024​

Russell Tree Experts has 20+ ISA Certified Arborists® and 3 ISA Board Certified Master Arborists®!

First of all, what is an arborist? An arborist is a professional that has studied and practices the proper care of urban trees and shrubs. They use a combination of science and skills learned both in the classroom and in the field to perform their daily tasks. Arborists have learned to identify many trees and shrubs along with their preferred growing sites and conditions. They are trained to identify and treat many pests and diseases as well. An arborist can take their commitment to the next level by earning the International Society of Arboriculture (ISA) Certified Arborist® credential, accredited by the ANSI National Accreditation Board (ANAB) for meeting ISA’s standards of training and knowledge in arboriculture.

With this being said, why call an arborist? Unfortunately, many of our calls come when it’s too late for the tree after it has already succumbed to some type of insect, disease, construction damage, and more. Some trees were also planted in the wrong place to begin with, or simply not planted correctly. The following are some examples of the best instances to call an arborist.

A mature tree being protected with fencing for an upcoming home renovation project.

The best time to call an arborist is before starting your project. Whether you are clearing a lot to build a new house, planting a new landscape around your house, or simply planting a tree anywhere, it is always beneficial to have a plan. One such plan may include how to save trees from damage that you want to maintain on your new lot. This requires a lot of planning before, during, and after this process. Planting the wrong tree in the wrong spot is often a problem we deal with in many situations. Many people don't account for the mature size of that river birch they planted just off the corner of the house. Structural pruning at an early age can help trees adapt to the site, even if they were planted in the wrong place. They may not realize that the red maple they planted does not like central Ohio soils. Many trees we deal with are not suited for our soils and require additional plant healthcare just to maintain their health. This can be avoided with proper planning and choices. The list goes on and on. Sometimes just a simple discussion or email can avoid a lot of issues down the road.

Sometimes a visit to a client’s property can be discouraging when arriving on site and seeing the results of preventable construction damage or improper planning that could have been avoided with a properly timed consultation. I once had a contractor tell me that he had never killed a tree. That contractor had apparently never visited a site he worked at 4 to 5 years later to see the results from the construction and damage. Some construction damage can be apparent within the first year, but oftentimes it may take 4 to 5 years before the total impact is realized.

A tree with chlorotic leaves, indicating a potential pH problem or nutrient deficiency that could slowly lead to the decline and death of the tree if left untreated.

When I arrive on a property with trees planted too closely together, planted in the wrong site conditions, and/or planted incorrectly, these inadequate conditions sadden me for the health of the trees. As an arborist, we are trained to see the future impact of plant selections, as well as how they will fit into their site at maturity. Trees planted too close together can often result in stunted growth due to resource competition such as water, sunlight, and space. Unideal site conditions for a tree can lead to numerous, future problems such as leaf scorch and chlorosis just to name a few. An improperly planted tree can result in stem-girdling roots and root rot. A simple consultation in the beginning can avoid a lot of issues down the road. 

My third, most challenging visit is to a recently purchased property. One of the best times to consult with an arborist is prior to purchasing an existing property with mature trees. We often find major problems that could be taken care of before the purchase by the seller or used in the negotiation of the purchase price. Most home inspectors are not trained to identify tree issues. A simple consultation could save you a lot of money on your new home purchase. A recent example is with our Media Production Coordinator (Enrique) who had a pre-purchase inspection by one of our Regional Managers (Mitch) who caught lecanium scale on a crabapple tree and boxwood leafminer on numerous boxwood shrubs that were missed by the home inspector. He was able to bring this to the attention of the previous homeowner who offered to take care of the plant healthcare services prior to closing. In the end, he saved a few hundred dollars by attaining a pre-purchase inspection instead of paying for plant healthcare services.

ISA Certified Arborist® Mike McKee and ISA Board Certified Master Arborist® TJ Nagel planting a ginkgo tree!

Another trend that I have noticed lately is insurance companies telling homeowners that they must eliminate all overhang of their structure or their insurance policy will be dropped. Some insurance agents are using Google Earth images to make many of these decisions and not visiting the property in-person to more accurately assess the tree’s risk. This practice could lead to pruning practices that could severely degrade the health of your trees. A property owner that is proactively caring for their trees should not be subjected to this practice. If this trend continues, it will be our job as arborists to help convince insurance companies not to require this practice, especially when it is not appropriate. If you receive such a request from your insurance company, this would be another opportune time to call an arborist.

In closing, the goal of this article is to help people to understand the best time to call an ISA Certified Arborist®. The scenarios mentioned in the article are from recent visits to our client’s properties and are a recurring problem. As an arborist, we are disappointed when we have to tell people to remove a tree that could have been preserved if the proper steps had been taken at the beginning of a project. Tree removal is a part of our business, but preserving trees for future generations is our passion! I hope this helps. Below are other beneficial Arbor Ed article related to tree planting and tree preservation. To request a free tree quote by one of our 20+ ISA Certified Arborists®, request a quote at RussellTreeExperts.com/Quote or call us at (614) 895-7000!

ADDITIONAL ARBOR ED ARTICLES!

Sincerely,

Mike McKee | Regional Manager, Russell Tree Experts

Mike graduated from Hocking College in 1983 with a degree in Natural Resources specializing in urban tree care. He has been a certified arborist since 1991. Mike started his career in the private industry in 1985 before becoming a municipal arborist in 1989. He retired after serving thirty years before joining us at Russell Tree Experts in Sept. of 2018. His love of trees has never waned since trying to climb up the ridges of the massive Cottonwood tree in front of his childhood home.

How to Mulch a Tree Ring with CRISP Edges!

By Enrique Arayata
ISA Certified Arborist® OH-7252A
August 6, 2024

In this article (and video below), we will be going over how to make a tree mulch ring with crisp edges! First, what is a tree mulch ring? In general, it is a circular area of organic mulch around the trunk of your tree. Sometimes the perimeter will be outlined with stone or plastic landscape edging. The benefits of creating a tree mulch ring is that if done properly, it will aid in maintaining the health of your tree and promote increased growth and vigor. We will also be going over common mistakes to be cautious of.

VIDEOS: HOW TO CREATE A TREE MULCH RING

Full-length video

Shortened video

Benefits of a Tree Mulch Ring

More Nutrients: Organic mulch contains a lot of essential nutrients like nitrogen, phosphorus, and potassium that will slowly break down and decompose for the tree to absorb. Examples of organic mulch are mulches made from wood chips, compost, or leaves. Examples of inorganic mulches that would not provide the benefit of increased nutrients are anything made of stones or synthetic materials like plastic or fabric.

Water Retention: Mulch is a natural insulator that will keep the soil warmer in the winter and cooler in the summer compared to the surrounding, ambient temperature. Mulch also retains water more effectively than grass or topsoil. Evaporation is slowed down and more water is available for the tree. This also means that less tree watering may be needed depending on the weather and season. Instead of watering every 1 to 2 days, a deep soaking once or twice per week could be completed with similar or improved results. Erosion is also minimized as mulch will lessen the impact of water droplets hitting the ground and washing away the soil.

Outcompeting Other Plants: Mulch will reduce competition of nutrients, water, and oxygen for the tree from grass, weeds, invasive plants, and more. This results in the tree having more resources to absorb to keep it growing as healthy as possible!

Minimizing Trunk Damage: A mulch ring will minimize or even eliminate any risk for trunk damage from lawn mowers or string trimmers. Someone may not be intentionally trying to damage a tree’s roots or trunk, but accidents happen when trying to mow or trim those last, stubborn blades of grass. If there’s mulch instead of grass near the trunk, then there will be no reason to bring a lawn mower or string trimmer within a close enough distance for accidental damage to occur. 

Soil Decompaction: Soil compaction is bad for a tree because it minimizes gas exchange and water infiltration. A tree benefits from soil decompaction and root zone invigoration if the soil is compacted when digging up the topsoil and is replaced with porous mulch. Peo de ple are also less likely to step on mulch compared to grass which will aid in minimizing soil compaction and keeping it porous for adequate gas exchange and water infiltration. 

Final product of a properly mulched tree ring!

Reduced Maintenance: Although there is an upfront time commitment with installing a tree mulch ring as well as some annual maintenance with re-edging the lines and adding mulch, less tree maintenance will be needed in the future. A tree mulch ring means less grass to mow and less weeds popping up. Revisiting the benefit of increased water retention, this means that less tree watering will be required with certain exceptions like newly planted trees and drought-like weather conditions. A properly installed tree mulch ring and a consistent watering schedule can also minimize the risk of stem girdling roots, soil compaction, drought stress, and some nutrient deficiencies. This makes for a healthier tree and lessened chance for problems that would require tree work services like fertilization, root collar excavation, root zone invigoration, or worse, tree removal.

Aesthetics: Subjectively speaking, tree mulch rings are aesthetically pleasing and can boost curb appeal! It conveys to passersby that you care about your trees and property. You can even make your neighbor Jim from three doors down envious of your lawn! If you start to notice other neighbors creating a mulch ring around their tree after creating yours, you can take pride and credit for being a trendsetter.

Stem girdling roots circling around the trunk of a tree. This is a common symptom a tree mulched or planted too deeply.

Correcting an Improperly Planted Tree: This doesn’t apply to every tree. However, if you are wanting to mulch a tree that just so happens to be planted improperly, this is a great double positive to fix the imperfection while also gaining the aforementioned benefits of tree mulching. Signs of an improperly planted tree are stem girdling roots, mulch volcanoes, and the lack of a visible root flare.

Now let’s move on with how to create a tree mulch ring and avoid some common mistakes!

How to Create a Tree Mulch Ring 

The ISA Arborists’ Certification Study Guide recommends a mulching depth of 2 to 4 inches and a radius of anywhere from 3 feet up to the canopy drip line of a tree.

1. Determine the size of your mulch ring! In general, aim for a mulch ring with a diameter anywhere between 6 feet wide or up to the canopy drip line for a medium-to-large sized tree. The latter is not always achievable however due to obstacles like nearby trees, plants, concrete, and more. As long as the mulch ring is at least 6 feet in diameter, it should suffice! In terms of mulch depth, 2 to 4 inches is recommended, but I like sticking closer to 2 inches deep.

2. Outline your circle and make sure the tree is centered. There are multiple, effective methods of outlining the mulch ring circle. Below are a few popular ways. One might be more effective than the other depending on your tree, such as if there’s a central leader or any low hanging limbs.

1. Method 1 requires a tool like a shovel or edger and some type of long, ovular, band like a piece of rope, tie down strap, belt, or exercise band. Place the tree trunk inside one end of the band and the edging tool on the other end of the band. Set the distance of the band to the desired radius of the mulch ring. Go around the tree in a circle and make a 2 to 4 inch deep cut into the ground until you have a fully outlined circle.

2. Method 2 requires string and a can of spray paint. Cut the string to the desired radius of your mulch ring. Leave some margin on the string so you can tie the tree trunk and spray paint can together and maintain the desired radius. On one end, tie the string gently and securely to the tree trunk and on the other end, tie the string to the spray paint can. An easy knot I recommend would be the bowline knot! Walk around the tree while applying a visible layer of spray paint to create a circular, painted outline. 

3. Method 3 requires a long garden hose and measuring device. Lay down the garden hose in a circle around the tree to create an outline the size of your desired mulch ring. Use the measuring device to check if the tree is centered in the circle by checking for the same radius at various locations between the trunk and the hose.

4. Method 4 requires a measuring device and an edging tool. Measure your desired radius from the trunk of the tree to the edge of the mulch ring and mark the spot by digging 2 to 4 inches into the soil with your edging tool. Move your shovel away from the mark and repeat this process along the circumference of the tree until your circle is fully outlined. 

3. Dig up the top 2 to 4 inches of topsoil within the circular outline! Be careful of any fine, fibrous tree roots. If any are present, consider using an air blower or your hands to gently remove the soil near it. If there’s any grass or weeds remaining after the top 2 to 4 inches of topsoil are removed, consider pulling them out to minimize the chance of weeds or grass growing out above the mulch. Check for a level surface and a well-defined edge and make touch-ups if needed.

4. Dampen the soil to a darker shade of brown and avoid pooling of any water. This could be considered optional on different guides for how to create a tree mulch ring, but I recommend this as a quick, low effort way to add moisture back into the soil. This is especially helpful if you are doing this in the middle of summer with any exposed roots. Avoid placing down landscape fabric between the soil and mulch. This is a common practice of the past that is slowly being phased out because studies have shown this to not be noticeably more effective at blocking weeds, because the openings can clog up with organic matter and minimize air exchange and drainage, and because the decomposed nutrients from the mulch will be blocked from improving your soil and making nutrients more available for your tree. If weeds are a concern, an optional step could be to apply a weed preventer like Preen before applying mulch.

An incorrect method of applying mulch commonly known as a mulch volcano.

5. Evenly apply your mulch! Depending on the specific diameter and depth of your hole, anywhere from 1 to 4 bags could be used. Be cautious of compacting the mulch. You can lightly tamp the soil with your hands to help level the surface, but keep the mulch porous to maximize gas exchange and water infiltration. Do not cover the root flare (also known as the trunk flare) of the tree. This may be a commonly seen occurrence, but that does not mean it’s the correct way to mulch a tree. This is known as a mulch volcano and is bad for the tree! They are detrimental to a tree’s health because they encourage unwanted disease and decay and because the needed oxygen-carbon dioxide exchange for healthy growth is minimized. Keep it simple by applying a level layer of mulch. If you are concerned about water runoff, a tiny, wall-like berm could be created around the perimeter of the mulch ring and formed by hand to encourage water to remain inside the mulch.

6. Touch up the circumference of the mulch ring to make that edge look nice and crisp! You can use a tool like the sharp end of a shovel, an edger, a string trimmer, or a bed redefiner. Avoid stepping on the edge or using a heavy piece of equipment as the edge could cave in and break.

Final product!

7. Water the mulch! Ideally, it is best to water the tree slowly and deeply using a watering bucket or a drip irrigation device, but you can also use a garden hose on the mist setting and apply it evenly for a couple of minutes to get the mulch damp and moist. Avoid pooling any water and do not get the trunk or leaves excessively soaked for an extended period of time because an environment for disease or decay could be created.

8. Voila, you’re finished! Time to take a step back, enjoy it, take a few pictures, show your friends and family, or whatever else you’d like to do! You might have also created a messy work zone that you may need to clean up!

~~~

In terms of future maintenance, you may annually need to redefine the edge to keep it looking crisp and you may need to add a minimal amount of mulch as it decomposes and thins out. To preserve your edge line, avoid mowing directly up to the edge and use a string trimmer to cut the grass 1-3 inches closest to the edge. You can also add stone around the perimeter to make it stand out even more, but this is not necessary in regards to your tree’s health.

I hope this article was insightful and useful! The videos near the beginning are a visual guide for how to create a tree mulch ring! If you’re curious to learn more, I strongly encourage checking out the related articles below on topics such as proper tree watering, tree mulching, mulch volcanoes, stem girdling roots, and more. As always, if you’re in the central Ohio area looking for tree work, one of our 20+ ISA Certified Arborists® are happy to provide a free tree inspection and quote!

Additional Arbor Ed Articles!

Sincerely,

Enrique Arayata I Media Production Manager, Russell Tree Experts

Enrique is an ISA Certified Arborist® and FAA Certified Remote Pilot. In his free time, he enjoys working out, hanging out with his family and girlfriend, video production, photography, cars, technology, and cooking. Enrique has a BA in moving image production with a double minor in film studies and studio art specializing in photography from The Ohio State University, and an AA in web graphic design from DeVry University. His favorite tree is the Kwanzan cherry tree.

Some Mites Like It Hot... Ready or Not!

By Krista Harris
ISA Certified Arborist® OH-6699A
July 10, 2025

As the average temperatures rise, hungry spider mites thrive! These tiny leaf suckers love hot and dry weather and are currently causing many of our beloved foundation shrubs to look sickly and even lose their leaves entirely.

Spider mites on a burning bush

Spider mite damage on burning bush (Euomymus alatus) and on boxwood (Buxus sp.) is common in the summer months. These typically dependably green shrubs will begin to take on a yellow or bronze cast when infested, and, upon closer inspection, a distinct stippling or scratched appearance of the leaves will become apparent. This characteristic pattern is caused by feeding of the mites on the undersides of the plant’s leaves. Many generations of this tiny sucker can occur per summer. A complete generation can take less than a week during 90°F temperatures and without significant rainfall. That’s a lot of babies at 100 eggs per female!

The twospotted spider mite is the species that afflicts the burning bush. These mites will also feed on many other species when available including viburnum, roses, edible plants, perennials and houseplants. In full sun conditions (especially near hardscape like driveways or brick walls) you may see their webbing binding the leaves and even tiny mites moving within the web. This species of mite overwinters as adults in leaf litter and in soil. It's important to clean up and bag any fallen leaves in the fall so that you can reduce the population of these pests before they wake up next spring.

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Burning bush with spider mites

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The boxwood spider mite can only feed on boxwood species. This makes it a “host specific” species of spider mite and will not cause damage to any other plants in your landscape. This mite also differs from the twospotted spider mite in that it creates no webs, it feeds on the upper surface of the leaf as well as the bottom surface and it overwinters as eggs on the boxwood plant.

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Boxwood with spider mites

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If you want to check your plants for these "pepper sized" pests or suspect you may have a growing spider mite issue, the best way is to firmly smack the twig over a white piece of paper. Look closely and you may see tiny mites crawling on the paper.

As a preventative measure, it is a great idea to give both your burning bushes and boxwoods a heavy spray with your hose nozzle. Do this twice a week in hot, dry weather (over 85°F). Concentrate on the undersides of the leaves especially to attempt to dislodge adults and eggs.

Keeping your plants watered during the summer also really helps to curb serious infestations. If plants are stressed for water, they will be much more likely to become overrun with spider mites and also insect pests like scale, aphids and lacebug.

If you would like one of our 20+ ISA Certified Arborists® to scout your landscape for spider mites and give you options to control these proliferous pests, please contact our office at (614) 895-7000 or request a free quote at RussellTreeExperts.com/Quote. We offer many options to get spider mites under control and we will help determine the best course of action for your specific trees and shrubs! Have a great summer and make sure to keep yourself watered as well!

Please note: This article was originally published on 7/25/2024 and was revised on 7/10/2025.

Additional Arbor Ed Articles!

Krista Harris | Journeyperson, Russell Tree Experts

Krista grew up in the central Ohio area and became an ISA Certified Arborist® in 2017. She graduated from The Ohio State University with a Bachelor of Science in Crop Science and a minor in Plant Pathology in 2000 and has been in the green industry ever since. Her favorite trees are the American sycamore, American beech, and giant sequoia. [BS in Horticulture Crop Science, The Ohio State University / ISA Certified Arborist® OH-6699A / ODA Comm. Pesticide Lic. #148078]

Deep Root Irrigation: Another way to water!

By TJ Nagel
ISA Board Certified Master Arborist®
July 18, 2024​

Every day over the last couple of weeks I have observed newly planted trees in parks, along streets, and in front yards dry up and lose all their leaves because they are not receiving adequate water. As the weather continues to heat up in central Ohio, this is the time of year to pay special attention to your newly planted trees (and shrubs) to ensure they do not dry out. All trees need water to healthily grow, photosynthesize, and be more resistant to pests and disease. However, newly planted trees (trees planted within the last 3 growing seasons) need extra watering help throughout this time of year because they have limited root systems and less access to moisture. Whether your new trees are deciduous, evergreen, big, small, or listed as a drought tolerant species, it must receive supplemental water this time of year.  

As a quick review, remember that watering is the single most important maintenance factor in the care of the newly planted trees. Traditionally, tree watering should be performed regularly, slowly, deeply and in the area with active feeder roots. For more detailed information on general watering practices check out my article and video on watering HERE! 

Today, I’d like to introduce a new tree watering service we are providing called Deep Root Irrigation (DRI).  DRI is intended to efficiently deliver water to tree roots that need special assistance getting adequate hydration. 

How Does Deep Root Irrigation Work?

With DRI, we use an irrigation lance to penetrate the surface of the soil and inject water six to eight inches deep into the root zone of the tree. Using the lance beneath the surface of the soil helps to bypass turf, groundcover, or weed roots and delivers the water directly to the root zone of the tree. 

An irrigation lance used for deep root irrigation.

Additionally, the water comes out of the lance at about 200 psi and splits into four separate streams that help to break up compacted soil and add valuable pore space into the soil profile for future root growth.

The tip of an irrigation lance spraying water at about 200 psi in 4 separate streams.

Since the water is being injected directly into the root zone of the tree with no chance of run off, the water can be applied to the tree quickly as opposed to the longer, deeper soaking that is required with traditional tree watering that starts above the soil surface. With DRI we can thoroughly apply the recommended 10 gallons of water to a new planted 2 inch dbh (diameter at breast height) balled-and-burlapped tree in 2 to 3 minutes. The amount of recommended water for a tree will vary depending on the particular tree’s size, level of establishment, and planting site.  

ISA Board Certified Master Arborist® TJ Nagel performing a deep root irrigation using an irrigation lance!

What Trees Benefit From Deep Root Irrigation?

While tree watering is essential for ALL trees, certain trees will benefit from deep root irrigation more than others such as:

• Newly planted trees in landscapes whose owners are away during the hot or dry seasons. A 2 week gap in watering is all it takes for a tree to dry out while it’s owners are enjoying vacation

• Newly planted trees that are not close to a watering source (park trees, street trees or trees inaccessible by hose)

• Established trees in restricted root zones (ex: parking lots or sidewalk cut outs)

• Trees that recently experienced soil compaction or root disturbance events

• Established trees that have recently received a root zone invigoration

• Trees experiencing stress from insect infestation or disease

• Over mature trees in the beginnings of decline

• Established trees during extreme periods of drought

How Often is Deep Root Irrigation Needed?

There is not a one size fits all answer to this question. Watering is essential to newly planted trees during most of the growing season (May through October). In general, a newly planted 2 inch dbh balled-and-burlapped tree should receive roughly 10 gallons of water once every 7 to 10 days. If you have newly planted trees that you regularly care for, but plan to be away for a short time on vacation during the growing season, DRI is likely to only be needed while you are away. If you have a large old tree that is in the beginnings of decline, a thorough DRI once a month during the summer months will go a long way to maintaining health and vigor. Every situation is different.

To request a quote, please visit RussellTreeExperts.com/quote or call us at 614-895-7000 and one of our 20+ ISA Certified Arborists® can help determine the best care for your trees!

DEEP ROOT IRRIGATION IN ACTION!

ADDITIONAL ARBOR ED ARTICLES!

Sincerely,

TJ Nagel I Scheduling Production Manager, Russell Tree Experts

TJ loves trees. He is an avid gardener and plant collector. TJ graduated from The Ohio State University with a B.S. in Agriculture with a major in Landscape Horticulture and minor in Entomology. TJ is an ISA Board Certified Master Arborist and well versed in Plant Pathology. TJ joined Russell Tree Experts in 2012.

Be Alert: Lecanium Scale

By Mike McKee
ISA Certified Arborist® OH-0192A
June 11, 2025​

“What is wrong with my tree?”

This is a question we receive on a daily basis. Sometimes it is obvious what is going on with your tree, but other times it may require a more thorough investigation. Many of the more obvious tree problems can be the result of mechanical, environmental or disease problems. However, the issue that I am writing about today is insect related, which often is less noticeable until populations get out of hand and start to cause damage. One such insect that can cause significant damage to trees this time of year is the European fruit lecanium scale. This is just one of many types of scale, so proper identification is a must as most scale insects have different life cycles and different control recommendations.

Female lecanium scale

Lecanium scale is considered a soft scale with a wide host range. In central Ohio, trees that are most affected by this insect are callery pear, crabapple, and fruit trees; although we do occasionally see infestations in birch,  honeylocust, oak, and hickory trees. Lecanium scale is most noticeable when the females fill up with eggs. Over 1,000 eggs can be produced by one female. This is why the insect can get out of control quickly if left unnoticed and untreated. Immediate damage is typically minimal with minor branch dieback and leaf discoloration. However, with large populations of lecanium scale feeding over multiple growing seasons, the consequences can lead to stunted growth or premature death of the host tree.

Scale typically overwinter as second instar nymphs on the bark of trees. This stage is sometimes hard to notice, unless there are dead females from the previous year present at the same time. As your plants begin to break bud and leaf out in the early spring, this is when lecanium scale starts to feed. As the females feed and start to produce eggs, you’ll can easily see the large bump like structures on the stems of infested trees. You may also notice honeydew starting to drip from the branches as well. The honeydew on heavily infested trees can make everything under the tree very sticky. This attracts many other insects like flies, wasps, and ants. It also supports the growth of a black sooty mold, which can negatively affect plant growth as well. The eggs typically hatch in early to mid-June coinciding with the bloom of the Washington hawthorn tree in Ohio. This is called the crawler stage when the eggs hatch and crawl out to the leaves to begin feeding. This is the time when lecanium scale are at their most vulnerable stage. After feeding through the summer, the insect returns to the bark to overwinter.

Second-instar nymphs that overwintered on the tree stems. Note white waxy covering beginning to form. Scales are in their final fixed position, actively feeding and growing. Note droplets of honeydew here and there.

Each of these nymphs will mature into adult females that will be about 10 times their current size by the time they lay their clutch of 100 or more eggs.

This is a new infestation. An old infestation would also have the dead female bodies of last year’s adults alongside the current generation. They would be dark brown and about the size of BBs used for air gun ammunition.

There are many natural predators that feed on lecanium scale, but generally there are not enough to control large populations. This is when treatment options are beneficial. Every situation is different and may require different treatment strategies. Our ISA Certified Arborists® can visit your property and determine the best course of action.  

The most effective way to keep lecanium scale out of your landscape is to avoid planting host plants like crabapples, weeping cherry and callery pear. Keeping plants healthy, vigorous and stress free will also help to reduce the likelihood that lecanium scale takes up residence in your trees. If lecanium scale do make their way into your landscape, two well timed topical insecticide sprays on the crawler stage can help reduce and keep the population at a threshold that damage to the tree is minimal. On very small trees, adults can be removed and destroyed by hand before the eggs hatch.

If you think lecanium scale is a problem on your tree, you can request a free tree quote by one of our 20+ ISA Certified Arborists® at RussellTreeExperts.com/Quote or by speaking to our friendly, local office at (614) 895-7000!

Please note: This article was originally published on 5/16/2024 and was revised on 6/11/2025.

ADDITIONAL ARBOR ED™ ARTICLES!

Tree Care Videos!

Mike McKee | Regional Manager, Russell Tree Experts

Mike graduated from Hocking College in 1983 with a degree in Natural Resources specializing in urban tree care. He has been an ISA Certified Arborist® since 1991. Mike started his career in the private industry in 1985 before becoming a municipal arborist in 1989. He retired after serving thirty years before joining us at Russell Tree Experts in 2018. His love of trees has never waned since trying to climb up the ridges of the massive Cottonwood tree in front of his childhood home.

Rhizosphaera Needle Cast: Causes, Symptoms, and Management

By Mike Wilson
ISA Certified Arborist® OH-6806A
May 1, 2025

Rhizosphaera needle cast is a fungal disease that affects various species of coniferous trees, particularly spruces throughout central Ohio and the midwest, and has become increasingly common. This disease can cause significant damage to tree health and aesthetics if left untreated. Understanding its causes, symptoms, and management strategies is crucial for preventing its spread and minimizing its impact on host trees in your landscape. Rhizosphaera needle cast, or needle cast for short, is primarily caused by the fungus Rhizosphaera kalkhoffii. This fungus thrives in humid and wet conditions, which Ohio is seeing more and more of now. Spores of the fungus are spread through water splash, wind, and contaminated pruning tools, facilitating its transmission from infected to healthy trees. Colorado blue spruce trees (Picea pungens) is especially vulnerable due to the fact that they much prefer dry, arid environments like in Colorado and Utah.

A young Colorado blue spruce tree (Picea pungens) rapidly defoliating

Symptoms

The symptoms of needle cast typically appear on older needles first and progress upwards through the tree. Common symptoms to look out for are:

• Needle Discoloration: Infected needles initially develop yellow or light green spots, which gradually turn brown or purple-ish brown as the disease progresses.

• Needle Dropping: Infected needles may prematurely drop from the tree, leading to sparse foliage and an overall thinning of the canopy.

• Black Fruiting Bodies: Under close inspection, black fruiting bodies (spores) of the fungus may be visible on the surface of infected needles, particularly during humid conditions. This shows up as very fine black peppering found on the underside of the needles.

Black fruiting bodies (spores) of the fungus fungus Rhizosphaera kalkhoffii on the surface of infected needles

Effective management strategies of Rhizosphaera needle cast involves a combination of cultural practices, chemical control, and preventive measures.  

Cultural Practices

• Proper Tree Spacing: Ensuring adequate spacing between trees promotes good air circulation, reducing humidity levels and minimizing fungal growth.

• Pruning: Prune infected branches to improve air circulation within the canopy and remove sources of fungal spores. Also, lightly elevating the canopy of a tree above the ground can help increase airflow.

• Mulching: Apply a 2 to 4 inch layer of organic mulch around the base of trees to retain soil moisture and reduce stress, which can help trees resist fungal infections. 
  

Chemical Control

Apply fungicidal sprays containing active ingredients such as chlorothalonil or copper hydroxide during the spring months as new growth is emerging. Multiple applications in 10 to 14-day intervals applied annually are most effective, however, there is no end-all cure for this fungal disease.

Preventive Measures

• Monitoring: Regularly inspect trees for early signs of infection, especially during periods of high humidity.

• Water Management: Avoid overhead watering and excessive irrigation, as these practices can create ideal conditions for fungal growth. Water trees in the morning or evening to avoid foliage staying wet overnight. Water the tree’s roots and surrounding soil area directly as opposed to watering the foliage.

• Plant Selection: Some other options that may be suitable for your landscape include, but are not limited to: Concolor fir (if you desire the silvery blue color), Norway spruce, green giant arborvitae, and Canadian hemlock.  

Purple-ish brown needle discoloration, a symptom of rhizosphaera needle cast

Rhizosphaera needle cast poses a significant threat to the health and vitality of coniferous trees, particularly Colorado blue spruce. By understanding the causes, symptoms, and management strategies associated with this fungal disease I hope that you will, as a Colorado blue spruce owner, help keep these beautiful trees healthy. Through a combination of cultural practices, chemical controls, and preventive measures, it is possible to mitigate the impact of Rhizosphaera needle cast and preserve the beauty and ecological value of our coniferous forests and landscapes. If you suspect your trees are infected or need advice on proper tree maintenance, request a free tree quote by one of our 20+ ISA Certified Arborists® (myself included) at RussellTreeExperts.com/Quote or at (614) 895-7000! Have a happy summer, we’re looking forward to helping you with your trees!

[Please note: This article was revised and republished on 5/2/25 from its original publish date of 5/1/24]

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Check Out These Tree Preservation Videos!

Additional ARBOR ED™ Articles!

Mike Wilson I Regional Manager, Russell Tree Experts
Mike joined RTE in 2013 and has been in the green industry for over 14 years! He is an ISA Certified Arborist® and a graduate of Oregon State University. Mike is an outdoor enthusiast and a US Army Medic Veteran!