Syringa × laciniata or cut deeply into three to nine lobes or leaflets. The flowers are pale lilac, produced in loose panicles up to 7 cm long in mid spring. It is hardy to USDA plant hardiness zone 5. Syringa × laciniata Syringa × laciniata, the cut-leaf lilac or cutleaf lilac, is a hybrid lilac of unknown, though old origin. It is thought to be a hybrid between "Syringa vulgaris" from southeastern Europe and "Syringa protolaciniata" from western China. Although often cited as being from China, it more likely arose somewhere in southwestern Asia, where it was first scientifically described from cultivated plants
Syringa vulgaris that hardy character of the men and women of the Granite State". Additional hardiness, for Canadian gardens, was bred for in a series of "S. vulgaris" hybrids by Isabella Preston, who introduced many of the later-blooming varieties, whose later-developing flower buds are better protected from late spring frosts; the "Syringa × prestoniae" hybrids range primarily in the pink and lavender shades. Most garden plants of "S. vulgaris" are cultivars, the majority of which do not exceed tall. Between 1876 and 1927, the nurseryman Victor Lemoine of Nancy introduced over 153 named cultivars, many of which are considered classics and still