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Montana Field Guide

Montana Field Guides

Bulbous Bluegrass - Poa bulbosa
Other Names:  Bulbous Meadow-grass

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Perennial bunchgrass. Stems 20–60 cm, with a bulbous base. Leaves: blades 1–2.5 mm wide, mostly basal; ligules 1–3 mm long. Inflorescence a contracted panicle, 3–10 cm long. Spikelets 4–15 mm long. Lemmas usually transformed into small vegetative bulbs, hairy along veins. Roadsides, trailsides, open dry sites (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Introduced throughout most of the U.S. Sometimes seeded in open range to compete with less desirable colonizing grasses (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 45

(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)


  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Bulbous Bluegrass — Poa bulbosa.  Montana Field Guide.  .  Retrieved on , from