GROWTH HABIT: This is an aromatic perennial.
LEAVES: Leaves equally distributed along the stem; blade lanceolate in outline but finely dissected into may ultimate segments, overall dimensions are 2 to 6 inches long and 1/4 to 1 inch wide.
STEMS: Stems 1 to 2 feet tall with wooly hairs, arising singly or loosely clustered from a weakly spreading rhizome.
FLOWERS: Inflorescence with many small heads in a flat-topped or dome-shaped cluster with five white or pink ray flowers, and 10 to 20 disk flowers. The flowering period is June to August. Its elimination should only be on private land after careful evaluation.
OTHER: This species includes a complex of several ill-defined phases and polyploid races. It is widely distributed throughout the temperate northern hemisphere. Even though seldom a weed problem, it is widespread, occupying many plant communities including aspen, conifer, sagebrush, mountain brush, riparian, meadow and alpine at 4,000 to 11,000 feet.
Western yarrow is most commonly found in the U.S. while common yarrow (Achillea millefolium L.) Is a Eurasian species.