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Setaria faberi is an annual grass that can reach 2-5 ft. (0.61-1.5 m) in height.

Foliage

Leaves are up to 16 in. (41 cm) long, 0.6-1 in. (15-25 mm) wide. Sheath is round with hair on margins. Blade has short hairs cover the upper surface. Ligule has a fringe of hairs. There are no auricles.

Flowers

Flowering occurs in late summer to early fall, when a green (eventually straw colored), bristly inflorescence develops. The inflorescence resembles a foxtail, hence the common name.

Fruit

The fruit are small flattened ovoids with hard coats. They usually germinate in late spring to early summer.

Ecological Threat

Setaria faberi is native to Asia and was accidentally introduced in the United States in the 1920s as a contaminant of other grain. Plants invade disturbed sites such as roadsides, landfills, fence rows and right of ways.

Herbicide Resistance

Populations of this plant exist in the United States that are resistant to ACCase inhibitors (A/1), ALS inhibitors (B/2), and Photosystem II inhibitors (C1/5).]]> Fri, 29 Mar 2024 05:02:27 -0400 Fri, 29 Mar 2024 05:02:27 -0400 http://Images.bugwood.org/ <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391353 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391353 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5139094 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5139094 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391354 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391354 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5308093 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5308093 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5308092 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5308092 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5386273 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5386273 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391347 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1391347 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5467259 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5467259 <![CDATA[giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5437218 giant foxtail Setaria faberi]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5437218