Yarrow, or Milfoil, a strong-smelling medicinal plant native to Europe and Asia but common also in North America. Yarrow grows one to two feet (30 to 60 cm) tall and bears finely cut, feathery leaves and flat-topped clusters of tiny white flowers. The leaves and flowers have long been used to heal wounds, and a tea made from them is used to stimulate the appetite, treat diarrhea, and reduce fever. Tincture of yarrow is an astringent that has been used to stop bleeding.

Yarrow is Achillea millefolium of the composite family, Compositae.