Maximilian sunflower

Helianthus maximiliani

Aggressive, rhizomatous perennial native with showy yellow flowers, blooming from July to October. Forms dense colonies in moist heavy soils of mixed grass prairies and rocky upland sites; up to 5,000 ft. elevation. Food and habitat for numerous bees, insects, birds, small mammals and large game. Important late-season nectar source for migrating Monarch butterflies.