|Scientific Name||Setaria faberi|
|Common Names||English: Giant foxtail; German: Große Borstenhirse; French: Sétaire géante|
|Description||Annual, warm season grass with heavy seed-propagation, originates from Asia.|
Foxtail-like seedhead that droops when mature.
Leaves with many hairs on the upper leaf surface.
First leaves are typically parallel to the ground.
Bent at nodes, rarely branching, glabrous to 1.2 m (3.93 ft) tall.
Hairy leaf sheath margins, upper side of leaves hairy.
Fringed membranous ligule
Blades 15-30 cm (5.9 - 11.8 inch) long, 1-2 cm (0.39 - 0.78 inch) wide.
Dense panicle, cylindrical, bristly, spike 2.5 to 12.5 cm (0.98 - 4.92 inch) long.
Spikelets 2.5 - 3 mm (0.098 - 0.118 inch) long, 1.2 -1.5 mm (0.047 - 0.059 inch) wide, sessile.
3 - 6 bristles below each spikelet, bristles up to 1 cm (0.39 inch) long.
Midsummer - early autumn.
Germination from late spring - early summer.
Viability Of Seeds
Ca. 400-800 seeds/plant.
Optimal emergence from 1-2 cm (0.39 - 0.78 inch) depth.
Riverbanks, cultivated fields, gravel bars, old fields, roadsides, railroads.
S. faberi prefers low, bottomland cultivated fields and grows best on fertile sandy soils.
S. faberi is a competitive summer annual grass that reduces yields in many crops. Biotypes that have developed resistance against ALS, ACCase and PS II inhibiting herbicides have been identified.
Integrated Crop Management
Tillage and mechanical control methods are effective in controlling seedlings and young plants.
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