Blue Mistflower (Conoclinium coelestinum). Native from the central U.S. to the East Coast. This relative of Joe Pye Weed blooms in late summer into fall, reaching 2 to 4 feet tall. Thriving in sun to partisl shade in medium soil (it’s really quite adaptable, though moist might be best in full sun), this short plant will run and spread moderately fast. Diverse insects feed on the nectar, so it’s great for a butterfly garden.