This tall perennial of wet places has lance-shaped, toothed leaves, and well-branched, strongly vertical spikes that bear small, dark blue-violet flowers. Self-seeds. Attracts bees, nectar plant for butterflies. Blue Vervain has been called a natural tranquilizer, as it was used for fevers and colds, and for insomnia. It's external use healed sores and wounds. Most effective in mass plantings. Makes a nice, long-lasting cut flower.
Height: 3-4 Feet
Blooms: July to August
Bloom Colour: Purple
Light: Full Sun to Part Sun
Soil: Moist to Wet, Loam/Organic, Clay & Average Soil
Habitat: Moist to Wet Meadows & Prairies