Page author: Don Knoke
Digitaria sanguinalis
hairy crabgrass

Distribution: A weed in most of the United States.

Habitat: Lawns, gardens, and wasteland.

Flowers: July - October

Origin: Introduced from Eurasia

Conservation Status: Not of concern


Freely branching annual, often prostrate to ascending and rooting at the lower nodes, the culms hollow, up to 3 dm. tall.


Sheaths open, with stiff hairs 2-3 mm. long; ligules truncate to obtuse, 1.5-2 mm. long; blades flat, 4-6 mm. broad, the margins turning upward on the ligule as slight ridges.


Inflorescence of several racemes 5-12 mm. long, digitate in 2 or 3 whorls; articulate blow the glumes; spikelets 2-flowered, the lower sterile, paired on one side of a triangular rachis; first glume about 0.5 mm. long, the second about 2 mm. long; sterile lemma and fertile lemma each about 3 mm. long, appressed-hairy, the lateral nerves prominent; stamens 3.

Accepted Name:
Digitaria sanguinalis (L.) Scop.
Publication: Fl. Carniol. (ed. 2) 1: 52. 1771.

Synonyms & Misapplications:
Panicum sanguinale L.
Syntherisma sanguinalis (L.) Dulac
Additional Resources:

PNW Herbaria: Specimen records of Digitaria sanguinalis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Digitaria sanguinalis checklist entry.

E-Flora BC: Digitaria sanguinalis atlas page.

CalPhotos: Digitaria sanguinalis photos.

USDA Plants: Digitaria sanguinalis information.

17 photographs:
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