Hardiness Zone: 3-8 Height: 0.6-1.8 metres; 2-6 feet Spread: 0.3-0.75 metres; 1-2.5 feet Sun: Full sun Water: Medium to wet Wildlife: Attracts butterflies Bloom Colour: Purplish-blue Tolerates: Wet soil Culture: Easily grown in average, medium to wet soils in full sun. Typically forms colonies in the wild by both thick, slowly spreading rhizomes and self-seeding. Requires consistently moist soils. May self-seed in gardens in optimum growing conditions. Can be short-lived (2-3 years). Noteworthy Characteristics: Blue Vervain is a rough, clump-forming perennial with a stiff, upright habit which typically grows 2-4' tall with small, tubular, blue-violet flowers that open from the bottom up in July Garden Uses: Borders, meadows, prairies, native plant gardens or informal/naturalized areas.
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