Blue Vervain
This easy-to-grow native perennial produces an abundance of true blue-violet flowers that open from the bottom up. The spiky inflorescences are highly attractive to pollinators, and the Common Buckeye butterfly relies on Blue Vervain as a larval host. Provide moist soil and full-to-part sun conditions, and enjoy these blooms over a long season. The flowering tops have been used in traditional remedies for anxiety, indigestion, colds, and fevers.