Revised October 2010

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Identifying Grass Seedlings

Foxtail, yellow (Setaria glauca)

Summer annual grasses

Description

Yellow foxtail is a decumbent annual grass that may root at its nodes. Auricles are absent, the ligule is a tuft of hair, and sheaths are distinctly flat with a reddish color. The blades are 5–10 mm wide, a pale, blue-green color and hairless except at their bases, which have long, sparse hairs.

Mature smooth yellow foxtailMature yellow foxtail.
 

Collar region SeedheadCollar region: hairy ligule and hairs at base of leaves.
Right, yellow foxtail seedhead.
 

Habitat

Yellow foxtail commonly occurs in cultivated fields, pasture, waste ground, landscapes and any open area with nutrient-rich soil.

Distribution

Yellow foxtail is found throughout Missouri and across the United States.

Similar species

Giant foxtail also has a hairy ligule, but it is covered with hairs on the upper leaf surface. Green foxtail has a hairy ligule, but it lacks hairs along the upper leaf surface. Green foxtail has round stems.

IPM1024, revised October 2010

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IPM1024 Identifying Grass Seedlings | Page 9 | University of Missouri Extension