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
Gracillaria arsenievi Gracillaria arsenievi Gracillaria arsenievi is a moth of the family Gracillariidae. It is known from the island of Hokkaidō in Japan and the Russian Far East. The wingspan is 10-13.2 mm. The larvae feed on "Fraxinus americana", "Fraxinus chinensis", "Fraxinus mandshurica", "Fraxinus pennsylvanica", "Syringa amurensis", "Syringa reticulata" and "Syringa vulgaris". They mine the leaves of their host plant. The mine starts as upper epidermal and tortuous-linear, and later becomes a blister-like blotch. The leaf roll made by the larva of the late instars is conical or trigonal, always rolled up from the tip of the leaf or leaflet on the