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Achillea millefolium var. occidentalis (Western yarrow)
Smith, Sandy

Achillea millefolium var. occidentalis

Achillea millefolium L. var. occidentalis DC.

Western Yarrow, Woolly Yarrow, White Yarrow

Asteraceae (Aster Family)

Synonym(s): Achillea angustissima, Achillea aspleniifolia, Achillea eradiata, Achillea gracilis, Achillea lanulosa, Achillea lanulosa ssp. typica, Achillea lanulosa var. arachnoidea, Achillea lanulosa var. eradiata, Achillea laxiflora, Achillea millefolium ssp. lanulosa, Achillea millefolium ssp. occidentalis, Achillea millefolium ssp. pallidotegula, Achillea millefolium var. aspleniifolia, Achillea millefolium var. gracilis, Achillea millefolium var. lanulosa, Achillea millefolium var. rosea, Achillea millefolium var. russeolata, Achillea occidentalis, Achillea rosea, Achillea tomentosa

USDA Symbol: acmio

USDA Native Status: L48 (N), AK (N), CAN (N), GL (N), SPM (N)


From the Image Gallery

21 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 2 feet tall.
Leaf: Green
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun , Jul


USA: AK , AR , AZ , CA , CO , CT , DC , FL , IA , ID , IL , IN , KS , MA , MD , ME , MI , MN , MO , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SD , TN , TX , UT , VT , WA , WI , WV , WY
Canada: AB , BC , MB , NB , NL , NS , NT , ON , QC , SK

Growing Conditions

Water Use: Medium
Light Requirement: Part Shade
CaCO3 Tolerance: Medium


Conspicuous Flowers: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR

Additional resources

USDA: Find Achillea millefolium var. occidentalis in USDA Plants
FNA: Find Achillea millefolium var. occidentalis in the Flora of North America (if available)
Google: Search Google for Achillea millefolium var. occidentalis


Record Modified: 2012-12-06
Research By: TWC Staff

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