Revised June 2007

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Contents

Weed identification

Summer annual broadleaf

Biennial broadleaf

Perennial broadleaf

Summer annual grass

Winter annual grass

Perennial grass

Plants resembling grasses

Herbicides

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Practical Weed Science for the Field Scout: Corn and Soybean

Summer annual grass

Sandbur (Cenchrus spp.)

Sandbur
Sandbur

An annual grass with conspicuous burs along the seedhead that is primarily found in sandy areas of fields throughout the southeastern United States. Leaves are rolled in the shoot and are without auricles. Leaf blades may reach 8 inches in length and 6 mm in width and are rough above but without hairs below. The ligule is a fringe of hairs that is approximately 1 mm long. Sheaths may reach 20 inches in height and are without hairs and somewhat flattened in appearance. Seedheads consist of many round, spiny burs. Each bur is approximately 5 to 7 mm wide and contains two to four spikelets that are 4 to 5 mm long.


Wild thing

IPM1007, revised June 2007