erect forb, arising singly or as a loose cluster, growing 6 to 24
inches tall. The stems have dense wooly hairs. It flowers April
to July, and reproduces from seeds and rhizomes.
are white to pink or pinkish-white colored, all with yellow centers.
They are borne in flat-topped corymb.
is a flattened achene.
simple, fern-like. Surfaces pubescent, aromatic.
in prairies, sagebrush plains, pastures, roadsides, and disturbed
sites. It grows from the semi-desert zone up to the subalpine zone.
It has some shade and drought tolerance.
to a broad range of soils, but does best on sandy and gravelly loam.
big sagebrush, wheatgrasses,
provides poor to fair cattle forage and fair to good sheep forage,
especially the inflorescence. It is usually grazed only when its
green, and it may contain toxic alkaloids and glycosides.
An excess of this plant on mountain range indicates the need for
lighter grazing or rest.
According to tradition, the plant was first named by Achilles, hence
its scientific name.
Native Americans used tea made from yarrow to relieve ear-, tooth-,
and headaches; as an eyewash; to reduce swelling; as a cold remedy;
and as a tonic or stimulant. Yarrow varies in taste and in potency
depending on where it grows and at what stage of growth it is in.
The best time to collect yarrow for tea is right before the flowers
are produced, using only the new succulent leaves. Green leaves
were use to relieve itching, chewed for toothaches, and used as
a mild laxative. During the Civil War, yarrow was widely used to
treat wounds and became known as "soldiers' woundwort."
An ethanol extract of yarrow has mosquito- repelling properties.