Salix babylonica but beyond China, it has not generally been as successfully cultivated as some of its hybrid derivatives, being sensitive to late-spring frosts. In the more humid climates of much of Europe and eastern North America, it is susceptible to a canker disease, willow anthracnose ("Marssonina salicicola"), which makes infected trees very short-lived and unsightly. "Salix babylonica" (Babylon willow) has many cultivars, including: Various cultivars of "Salix matsudana" (Chinese willow) are now often included within "Salix babylonica", treated more broadly, including: Yet other weeping willow cultivars are derived from interspecific "Salix" hybrids, including "S. babylonica" in their parentage. The most widely
Salix acutifolia Salix acutifolia Salix acutifolia, also known as Siberian violet-willow, long-leaved violet willow or sharp-leaf willow, is a species of flowering plant in the Salicaceae family, native to Russia and eastern Asia. It is a spreading, deciduous shrub or tree, growing to tall by wide. The young shoots are deep purple with a white bloom. The leaves are narrow, up to long. The catkins are produced in early spring, before the leaves. Older bark has a fine, netted pattern. Like all willows this species is dioecious. Male catkins are and silvery, with gold anthers, while female catkins are green and long.