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Montana Field Guide

Montana Field Guides

Hairy Crabgrass - Digitaria sanguinalis
Other Names:  Large Crabgrass, Panicum sanguinale

Non-native Species

Global Rank: G5
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
tems 30–60 cm, decumbent and rooting at lower nodes; nodes hairy. Leaves: blades 4–7 mm wide; ligules 1–2 mm long, membranous, throat sparsely hairy. Inflorescence of 7 to 10 digitately or almost digitately arranged secund spikes, 8–12 cm long. Spikelets 2.8–3 mm long, narrowly ovate; first glume very short, about 0.3 mm long, the second glume 1–2 mm long, without glandular hairs. Lemmas: fertile lemma narrowly elliptic, light brown at maturity (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Throughout nearly all of North America except at the extreme northern latitudes (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 12

(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?
    • Brey, C.W. 1998. Epidemiology of wheat curl mite (Aceria tosichella K.) and wheat streak mosaic virus on feral grass species and effect of glyphosate on wheat curl mite dispersal. Ph.D. Dissertation. Bozeman, MT: Montana State University. 136 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:
Hairy Crabgrass — Digitaria sanguinalis.  Montana Field Guide.  .  Retrieved on , from