|Mat-forming perennial that makes and ideal groundcover. Reaches 6 to 8 inches tall and spreads to 12 inches. Fern-like leaves are light grayish-green, narrowly pinnate, and hairy. Flowerheads are flattish clusters in white. Blooms summer to 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 argentea of Gardens.