Blue Vervain (Verbena hastata)
Synonyms: Simpler’s Joy
A clump-forming perennial with stiff, upright stems with square hairy stems; lance-shaped, toothed leaves to 6 inches long; small purple-blue flowers are found on thin spikes, blooming from top to bottom; blooms from July to September. Found across British Columbia to Nova Scotia, south to CA, AZ and FL; wet meadows, wet river bottoms, stream banks, fields and waste areas. Best in full sun, moderate to wet soils; self sows readily.