In this second part of our “Asian trees for the Ohio landscape” series, we’re taking a closer look at the Japanese tree lilac (Syringa reticulata subsp. reticulata), a small to medium-sized tree that is suitable for many locations in the landscape. If you’re interested in a larger shade tree for your yard, check out part 1 of this article series here, where we discuss the Japanese katsura tree.
The Japanese tree lilac is native to Japan. It is in the same genus as shrub-type lilacs, but as the name implies, has a tree-like form that provides for a different application in the landscape. With a mature height of 20-30’ and width of 15-20’, it’s a great choice for smaller spaces near patios or closer to homes, or when used in group plantings along a large driveway. It is also an appropriate option for a street tree, as it can be easily maintained to clear streets and sidewalks with a more upright, rounded canopy.
When selecting shrub-like lilacs for the landscape, homeowners often do so for the beautiful and aromatic flowers that emerge each spring. The Japanese tree lilac makes no exception in this manner, producing large clusters of white, fragrant flowers in early summer. Its foliage is similar in shape to that of a common flowering lilac, with no particularly notable fall color before leaf drop. Its bark has distinctive markings (lenticels), closely resembling that of a cherry tree.
When planting a Japanese tree lilac, be sure to select a location that gets plenty of sun throughout the day. It will tolerate less than ideal soil conditions including compact and dry sites, but thrives in well-drained, moist and fertile soils. As is the case with virtually all trees, proper amendment of the soil when planting the tree and proper after-care (watering and fertilization) will set it up for success in subsequent years.
The Japanese tree lilac has a medium growth rate. It is susceptible to a few insect and disease issues if growing in a stressful environment, but is widely considered to be the most pest-free lilac. A popular variety of Japanese tree lilac that can be found in local nurseries is ‘Ivory Silk’, a cultivar that matures to approximately 20’ in height and flowers at a young age.
The Entire 3-Part Series
Walter Reins | Regional Manager, Russell Tree Experts
Walter has been an ISA Certified Arborist since 2003. He graduated from Montgomery College in Maryland with a degree in Landscape Horticulture, and has called Columbus, OH his home for nearly 20 years. Walter appreciates trees for their majesty and the critical role they play in our world.