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Montana Field Guide

Montana Field Guides

Sneezeweed - Achillea ptarmica
Other Names:  Sneezewort Yarrow, Wild Pellitory, False Sneezewort

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1

Agency Status


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General Description
Stems erect, branched above, angled, 30–60 cm. Herbage glabrous below, pubescent above. Leaves cauline, sessile; blades linear-lanceolate, 3–10 cm long, serrulate. Inflorescence leafy-bracteate, of few heads. Involucre 4–6 × 4–8 mm; bracts in 3 series; outer bracts villous, green with brown margins. Rays white, 8 to 10; ligules 4–5 mm long and wide. Disk flowers white,10–30; corolla ca. 3 mm long. Achenes 1–2 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced across northern U.S. and adjacent Canada; native to Eurasia. Collected in Flathead County (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 4

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus bifarius, Bombus frigidus, Bombus melanopygus, Bombus mixtus, Bombus ternarius, and Bombus insularis (Thorp et al. 1983, Wilson et al. 2010, Koch et al. 2012).


  • Literature Cited AboveLegend:   View Online Publication
    • Koch, J., J. Strange, and P. Williams. 2012. Bumble bees of the western United States. Washington, DC: USDA Forest Service, Pollinator Partnership. 143 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
    • Wilson, J.S., L.E. Wilson, L.D. Loftis, and T. Griswold. 2010. The montane bee fauna of north central Washington, USA, with floral associations. Western North American Naturalist 70(2): 198-207.
  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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Citation for data on this website:
Sneezeweed — Achillea ptarmica.  Montana Field Guide.  .  Retrieved on , from