The unique daisy-like flowers of this plant have distinctive tooth-like indentations at the ends of their petals. Producing copious quantities of bright yellow blooms, it puts on quite a show in August and September. Excellent for damp soils, it also does famously in good garden soil in full sun or light shade. Grows four to five feet tall. The dried flowers heads were used by Native Americans to cure head colds, giving this plant its other common name of Sneezeweed. Hardy to Zones 3 - 9.