A tall perennial sunflower with yellow flowers to 3 inches across, clustered leaves are grayish-green and rough to the touch, often folded and curving downward. Rhizomatous and aggressive. Blooms late August to October. Naturally dominant plant of the prairies, across southern Canada, south to NC, KY and TX. Best in full to partial sun, dry to moist soils; important wildlife plant, deer forage on leaves and birds eat the seeds.