Approximately 100 seeds per packet.

At a Glance: Yarrow is in the Aster family and is an aromatic herb that is usually rhizomatous. Yarrow likes to grow in well-drained soils and in open, rocky places such as gravel bars, roadsides, clearings, etc. It is also a common field or prairie plant. Plants grow 10-100 cm tall.

Leaves: Fern-like  delicate green leaves that alternate off of a lighter white/green stalk

Flowers: Round topped clusters of white to sometimes pink or reddish flowers.

Ethnobotany: Yarrow has many medicinal uses. Indigenous people of the Northwest use Yarrow for treating measles, colds, stomach pains and diarrhea, assisting in childbirth, and for general health tonic purposes. It is usually the above ground parts of the plant that are used.

Growing Conditions:

Sun/Shade Tolerance Hydrology Elevation Range
full sun > 80% dry & well-drained low elevation
mostly sunny 60-80% mid elevation
high elevation

Reference:
MacKinnon, A., Pojar, J., & Alaback, P. B. (1994). Plants of the Pacific Northwest coast: Washington, Oregon, British Columbia & Alaska. Richmond, Wash: Lone Pine Publishing.