Achillea millefolium (Common Yarrow)

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Achillea millefolium
Common Yarrow

Photographed in June

CHARACTERISTICS

Height: 1 - 3 ft

Width: 0.5 – 1.5 ft

Hardiness: Very hardy

Natural Setting: Adapted to many habitats throughout California, except the desert. Especially found in grasslands below 11,000 ft. ⁴

Plant Type: Perennial

Dormancy: Semi-evergreen

Form: Upright, Spreading

Growth Rate: Fast to moderate

Flower Season: Spring/summer

Soil: Nearly any type except very wet³

Sun Exposure: Full sun to partial shade

Water Requirements: Occasional to moderate

Summer Dry: Tolerates occasional light summer watering but not frequent summer watering.

Cold Tolerance: Tolerates cold to -10° F

OVERVIEW

Easy to grow with bright spring and summer flowers that attract pollinators. Very broad distribution throughout the Nortern Hemisphere.

CARE & MAINTENANCE

In inland areas, occasional summer watering will improve the appearance. To encourage longer bloom periods, regularly deadhead spent flowers.

Some gardeners prefer to leave the dried stems and flower heads to provide visual interest and habitat for wildlife. Alternatively, if you prefer tidiness, you can cut the plant back to the ground once all the flowers are spent.

USES

A good addition for a habitat garden or butterfly garden.

Can be used as a spreading groundcover or slope stabilizer.⁴

HISTORY

Achillea was named after Achilles, the Greek mythical hero who supposedly used it to treat his soldiers' wounds. The plant has been used for its wide range of medicinal properties, such as its ability to stop bleeding, heal wounds, and reduce fever. Yarrow contains several bioactive compounds that contribute to its therapeutic effects, including anti-inflammatory, antiseptic, and astringent properties.

Indigenous peoples across North America and other regions have traditionally used Achillea millefolium in their medicinal practices for centuries. For example, various Native American tribes utilized yarrow for treating wounds, toothaches, and gastrointestinal problems, as well as for its analgesic and anti-inflammatory properties.⁹ It was also used in spiritual practices and ceremonies, including as a protective charm and for divination.⁹

WILDLIFE

Its spring/summer flowers attract butterflies and bees. During the winter its foliage provides forage for birds.⁴

ANECDOTAL EXPERIENCES

• Reseeds moderately readily and also spreads through rhizomes. Not opressive but moves around.

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