Description
Blue Vervain (Verbena hastata) is a North American perennial with upright spikes of small violet blue flowers from mid to late summer. The flowers attract bees, butterflies, and other pollinators.
Blue Vervain is used in wildflower meadows, rain gardens, and naturalized plantings and has a history of use in herbal preparations.
Cold Hardiness Zone: 3
Stratification Required: 1 month cold
Mature Size: 2 to 5 ft
