University of Arkansas Division of Agriculture Cooperative Extension Service
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Weed Identification

Turfgrass Weed Control Database

The Turfgrass Weed Control Database contains the same information and pictures included in the Miscellaneous Publication MP-521. The weeds are arranged alphabetically by scientific name because common names vary and thus be inaccurate.

Purple Nutsedge, Cyperus rotundus
Cyperus rotundus
This is the most difficult sedge to control. Repeat applications will be needed. Monument (trifloxysulfuron), Certainty (sulfosulfuron) and Dismiss South (sulfentrazone + imazethapyr) provide temporary suppression of purple nutsedge. SedgeHammer + (halosulfuron), while slightly less effective is safe to use on all turfgrasses. Image 70 DG (imazaquin) is an effective herbicide for suppressing sedges in warm season turfgrasses. Image may cause stunting of turfgrasses.
John Boyd

Specialist: John Boyd
2301 S University Ave
Little Rock, AR 72204-4940
Phone: 501-671-2224
FAX: 501-671-2297