The trumpet vine or trumpet creeper (Campsis spp ... and the Chinese version (Campsis grandiflora), cultivars of which vary in their hardiness. “Morning Calm,” for instance, is hardy in ...
Plant it in a sunny or partially shady spot. The other species with violet flowers is blue trumpet vine (Thunbergia grandiflora, USDA zones 10 through 11). Its yellow-throated, blue-violet flowers ...