Page authors: Don Knoke, David Giblin
Setaria viridis

Distribution: Widely distributed throughout much of Washington; widely distributed throughout much of North America.

Habitat: Disturbed soil and wasteland.

Flowers: June-October

Origin: Introduced from Eurasia

Growth Duration: Annual

Conservation Status: Not of concern


Annual, the culms erect to decumbent, up to 1 m. tall.


Sheaths open; ligules nearly 2 mm. long; blades flat, mostly glabrous, 4-8 mm. broad.


Inflorescence a cylindric, congested panicle up to 10 cm. long; spikelets articulate below the glumes, 2-flowered, each subtended by 2-3 bristles; the upper, fertile lemma and palea enclosed by the second glume and lower, sterile lemma.



Accepted Name:
Setaria viridis (L.) P. Beauv.

Synonyms & Misapplications:
Chaetochloa viridis (L.) Scribn.
Panicum viride L.
Setaria viridis (L.) P. Beauv. var. breviseta (Döll) Hitchc.
Setaria viridis (L.) P. Beauv. var. weinmannii (Roem. & Schult.) Borbás
var. viridis – green bristlegrass
Additional Resources:

PNW Herbaria: Specimen records of Setaria viridis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Setaria viridis checklist entry.

E-Flora BC: Setaria viridis atlas page.

CalPhotos: Setaria viridis photos.

USDA Plants: Setaria viridis information.

33 photographs:
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