May through early June
4 to 8 ft.
5 to 10 ft.
one parent (S. afghanica) is native to Afghanistan; the other (S. laciniata) is native to northwestern China
USDA zones 3-7
Persian lilac is an older hybrid that was extensively planted because of its ability to tolerate adverse growing conditions. Being able to withstand heat and drought, it was a favorite of many landscapers before some of the newer lilac cultivars were developed.
It grows into a large, upright shrub with dark green leaves. In late May, it produces pyramid-shaped clusters of divinely fragrant lavender blossoms. Many people report that Persian lilac has one of the best scents of all lilacs. It is a very good choice where resilient shrub is needed and there is ample space for its mature size.
Persian lilac has been a long-lived, drought-tolerant shrub at the Xeriscape Demonstration Garden. The flowers are beautiful when in bloom and are wonderfully fragrant.
Persian lilac is susceptible to powdery mildew in late summer. Although it creates a white coating on the leaves, the powdery mildew doesn't seem to injure the shrub.
Prune out dead or damaged branches at any time.