|Figure 125.Yarrow (Achillea millefolium)|
Habitat and range.Yarrow is very common along roadsides and in old fields, pastures, and meadows in the eastern and central United States and Canada. Closely related forms occur in the Western States
Description.This weed is from 10 to 20 inches high and has many finely divided, feathery dark-green leaves. From June to September the plant produces flat-topped panicles consisting of numerous small, white flower heads. It has a strong odor.
Part used.The tops, collected when the plant is in flower.