Black Eyed Susan Vine 30 Seeds Thunbergia BLOOM TIME: Summer HARDINESS ZONE: Annual PLANT HEIGHT: 96 - 120" (Vine/Climber) . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average - Dry : Black Eyed Susan Vines are great trailing out of hanging baskets or containers or climbing fences, etc. They attract bees, birds, and butterflies, and their only desire is to make you smile!