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FOXTAIL, GREEN
 Foxtail, Green
[Setaria viridis (L.) Beauv.]
DESCRIPTION
Green
foxtail is a bright green clumping annual weed common in turf and pasture
areas. The seedheads can be distinguished from those of other foxtails because
they are smaller and greener with long hairs. Yellow foxtail has a wider
seedhead, with shorter bristles. In addition, yellow foxtail has hairs on the
leaf margins and ligule. Giant foxtail has the largest seedhead of the three
and this seedhead is drooping.
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Characteristic
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Description
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Seedhead / Flower
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seedhead a soft spike, oval in shape and long hairs on each
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, 0.03 - 0.04 inches (0.8 - 1 mm) long
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Growth Season / Life Cycle
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summer annual 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; flat, not hairy, slightly rough
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Leaf Blade Width
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up to 0.5 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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divided; hairy on edges
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Sheath Margin
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split with overlapping margins; edges hairy
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Sheath Type
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flattened; sheath is not hairy
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giant foxtail
(L), green foxtail (M) , yellow foxtail (R) seedheads
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green foxtail
sheath
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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
Green 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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