Late October - November
Common yarrow is a perennial herb found in mildly disturbed grasslands and forests. It produces one to several stems (8 to 16 inches tall) from a fibrous underground horizontal rootstock (rhizome). Leaves are evenly distributed along the stem, with the leaves near the middle and bottom of the stem being the largest. The flower heads have a flattened dome shape with approximately 10-20 ray flowers. The flowers are whitish.
Common yarrow is a drought tolerant species and can combat soil erosion. It is an especially important food source for many insects, moths, beetles, and wasps.
Seed should be collected and brought into the office to be verified in the lab.
Common yarrow is common in mildly disturbed soils.