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Montana Field Guide

Montana Field Guides

Creeping Bentgrass - Agrostis stolonifera
Other Names:  Spreading Bentgrass, Carpet Bentgrass, Agrostis alba var palustris

Non-native Species

Global Rank: G5
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Rhizomatous perennial or stoloniferous sod grass often forming dense mats or patches. Stems decumbent at base, 20–120 cm. Leaves: blades 2–6 mm wide, ligules 2–7 mm long. Inflorescence a mostly diffuse panicle 5–30 cm long, sometimes contracting after anthesis. Spikelets 2–2.5 mm long (up to 10 mm long if infected). Lemmas 2–2.2 mm long, awnless or rarely minutely awned from the back; palea up to two-thirds as long as lemma. [This description includes Agrostis gigantea as a synonym] (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)

Species Range
Montana Range


Range Comments
Introduced throughout all of North America (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 471

(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)

Wet meadows, stream sides, roadsides, pastures, and lawns from low to middle elevations (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


  • Additional ReferencesLegend:   View Online Publication
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    • Guenther, G.E. 1989. Ecological relationships of bitterbrush communities on the Mount Haggin Wildlife Management Area. M.Sc. Thesis. Bozeman, MT: Montana State University. 73 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Scow, K.L. 1981. Ecological distribution of small mammals at Sarpy Creek, Montana, with special consideration of the Deer Mouse, Peromyscus maniculatus. M.Sc. Thesis. Bozeman, Montana: Montana State University. 73 p.
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Citation for data on this website:
Creeping Bentgrass — Agrostis stolonifera.  Montana Field Guide.  .  Retrieved on , from