|A clump-forming and generously blooming evergreen perennial that reaches 4 feet tall and 18 inches wide. Leaves in rosettes are pinnate to 2-pinnate and grayish green in color. Stems are leafy and strong. Flowerheads are flattish clusters in yellow up to 5 inches across. Blooms early summer to early fall. This heat and drought tolerant perennial has a fiberous root system and can become invasive. Divide annually to maintain. Butterflies are attracted to this plant. Good cut flower that dries well, too. Somtimes referred to as Achillea eupatorium.