Cultivation: Easy. Sow in flat or direct seed. Germinates in about 8 days in warm soils. Space plants 18 inches apart. Grows vigorously in any kind of soil. Prefers full sun and very little water. Yarrow is a vulnerary (antiseptic), anti-inflammatory, hemostatic.
Herbaceous perennial. Native to temperate zones worldwide. Spreads joyfully. This is the hardy white-flowered species, wild harvested from the Oregon Siskiyou Mountains.