Common Name: Japanese tree lilacScientific Name Genus: SyringaFamily Name: OleaceaeIdentification NotesPrefers a slightly acidic, well-drained soil. Can tolerate some shade but best flowering in full sun. Prune after flowering. Tolerate of urban conditions but needs good air circulation. Native HabitatNative to northern China and Japan. Hardy zones 3 to 7. Growth HabitCan be grown as a small tree or large shrub, more commonly sold as a small tree in trade. Tree form grows to 30' tall by 20' wide with a rounded to oval crown. LeavesLeaves are ovate with a pointed tip. Dark green, growing up to 6" long. Fall color is not ornamental. Bark and StemsYounger bark is shiny brown turning gray-brown with age. Horizontal lenticels. FlowersLarge upright flower panicles (up to 10") of off-white flowers. Fragrant. Late spring to early summer. FruitBrown capsules in large panicles. Bloom TimeLate spring to early summer Common ProblemsNo serious insect of disease problems. Does not have the problems of other lilac.Can be susceptible to blights, leaf spots, wilt, and ring spot virus. Caterpillars can cause damage. Varieties or Cultivars'Ivory Silk' - Blooms heavily as a young plant. Common in commerce. Landscape UsesBest used as a specimen tree.