Revised June 2007
Download a free PDF of this guide.
Contents
Summer annual broadleaf
Biennial broadleaf
Perennial broadleaf
Summer annual grass
Winter annual grass
Perennial grass
Plants resembling grasses
Herbicides
Related pages
Other related Web sites
Use our feedback form to ask questions or make comments about IPM1007.
Publication search
Practical Weed Science for the Field Scout: Corn and Soybean
Summer annual grass
A summer annual grass with a prostrate or ascending growth habit, but unlike large crabgrass, with leaves and sheaths that do not have hairs and stems that do not root at the nodes. Leaf blades are 2 to 6 inches long, 2 to 7 mm wide, without hairs. Sheaths are essentially hairless but occasionally may have hairs in the collar region only. Ligules are 1 to 2 mm long and membranous. Seedlings or mature plants often have a reddish tint at the base. Seedheads are composed of 2 to 6 branches (spikes) at the top of stems, each about 2 inches long. Smooth crabgrass is often confused with broadleaf signalgrass and Texas panicum but does not have a hairy ligule like these other species.
IPM1007, revised June 2007