Common name(s): blue skullcap, American skullcap, mad dog skullcap
Description: perennial; vigorous with dark green leaves and small, tubular blue-violet flowers in summer. One of two species of skullcaps commonly used in medicine and herbalism.
Height: to 3 ft. Spread: to 30 in.
Position: full sun and consistently moist soil
Uses: medicine, herbalism, to attract pollinators
Winter Hardiness: to 0 F and below