Europe, Northern America
Hybrid origin, Northwestern United States, California, Canada
Persian lilac, Dwarf Korean lilac, Tree lilacs, Chinese lilac, Himalayan lilac
New Jersey tea,Maritime ceanothus,Ceanothus connivens
A1, A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14
4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24