Nutsedge Taking Over My Bermuda

Q: Nutsedge has taken over a whole section of our front yard. What should I use that won’t kill my Bermuda? 

A: Nutsedge is one of the worst weeds to contend with so act quickly to bring it under control. The chemical imazaquin can be used to control both yellow and purple nutsedge in bermudagrass, centipedegrass, St. Augustine grass, and zoysiagrass but not in fescue lawns. Since this chemical is absorbed by the roots, be sure to water the area after application. Nutsedge control can also be gotten with halosulfuron but I rarely see it for sale in retail stores. A new product is sulfentrazone. Research suggests you’ll get the best control with split applications thirty days apart.