|Clump-forming, carefree and generously blooming perennial for early summer and early fall. Reaches 36 inches tall and about 24 inches wide. White flowerheads are born on thick stems and are ideal for cutting. Good cut flower that dries well, too. Grayish green leaves are coarse and ovate in shape. This heat and drought tolerant perennial has a fiberous root system and can become invasive. Divide to maintain. Butterflies are attracted to this plant.