- Setaria faberi is an annual grass that can reach 2-5 ft. (0.61-1.5 m) in height.
- Leaves are up to 16 in. (41 cm) long, 0.6-1 in. (15-25 mm) wide.
* ===== Sheath: ===== * Round with hair on margins. * ===== Blade: ===== * Short hairs cover the upper surface. * ===== Ligule: ===== * Fringe of hairs * ===== Auricles: ===== * None.
- 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.
- 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).
University of California, Jepson Flora Project 
Virginia Tech Weed Identification Guide 
Flora of China, www.eFloras.org 
USDA NRCS PLANTS 
USDA ARS GRIN 
Heap, I., The International Survey of Herbicide Resistant Weeds. Online. Internet. Friday, November 15, 2013. The International Survey of Herbicide Resistant Weeds. Online. Internet.
Images from Bugwood.org