100 Purple BRAZILIAN VERBENA (Tuber Vervain) Verbena Rigida Flower Seeds BLOOM TIME: Spring - All Summer HARDINESS ZONE: 7 - 10 PLANT HEIGHT: 12 - 24" . . . PLANT SPACING: 15 - 18" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average - Dry Attracts bees, butterflies, and birds including HUMMINGBIRDS.