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FOXTAIL, YELLOW
 Foxtail, Yellow
[Setaria glauca (L.) Beauv.]
DESCRIPTION
Yellow
foxtail is a bright green clumping annual or perennial weed common in turf and
pasture areas. The seedhead can be distinguished from that of green foxtail
because it is thicker, and has shorter bristles. Giant foxtail has the largest
seedhead of the three and this seedhead is drooping. In addition, yellow
foxtail has hairs on the leaf margins and ligule. Knotroot foxtail is a
perennial weed that is very similar in appearance to yellow foxtail, but it has
rhizomes whereas yellow foxtail does not.
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Characteristic
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Description
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Seedhead / Flower
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seedhead a coarse spike, several bristles on one seed
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Vernation Type
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leaves rolled in the bud
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Ligule Type
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dense fringe of hairs, 0.04 inches (1 mm) long
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Growth Season / Life Cycle
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summer annual or perennial weed
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Auricle Type
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absent
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Leaf Blade Tip Shape
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sharp-pointed; long hairs on upper surface
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Leaf Blade Width
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up to 0.47 inches (12 mm) wide
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Stolon Presence
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absent
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Rhizome Presence
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absent
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Collar Type
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continuous
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Sheath Margin
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split with overlapping margins; edges not hairy
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Sheath Type
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flattened; sharply creased
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yellow foxtail
leaf hairs
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yellow foxtail
ligule and hairs
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Note: Still not
sure this is the right weed? The Turf
& Weed Identification Decision Aid may help. Check the TurfFiles glossary for definitions
of unfamiliar terms.
CULTURAL
CONTROL
These
grasses occur infrequently in North Carolina in highly maintained turf but can
be common in utility turf, such as along roadsides. Maintaining a dense,
healthy turf year round by proper mowing and fertilization helps prevent
encroachment and weed establishment.
CHEMICAL
CONTROL
Yellow foxtail can be controlled
with crabgrass preemergence and postemergence herbicides.
© North Carolina State University. This information sheet was prepared
by Fred Yelverton, Bridget R. Lassiter, Gail G. Wilkerson, Leon Warren, Travis Gannon, Jenifer J. Reynolds, and Gregory S. Buol. Department of Crop
Science, College of Agriculture & Life Sciences, North Carolina State
University. Prepared July 15, 2008. Available on-line at
www.turffiles.ncsu.edu. This publication was made possible through a grant
provided by the Center for Turfgrass Environmental Research & Education
(CENTERE) whose purpose is to support worthwhile projects that will benefit
both the private sector and the public, and protect the environment.
KEYWORDS FOUND IN THIS ARTICLE:
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