How to control Nutsedge?
Nutsedge is a very difficult weed to control because it produces tubers that can be 8” to 14” below ground. The nutsedge above ground dies off as the temperature drops but the tubers survive the winter and reproduce in the spring. Post emergent spray of Image, Sedgehammer, Tribute Total, or Basagran T/O should be used immediately as the nutsedge appears. Tubers usually develop within 6 weeks so immediate action is critical. Most pre-emergences are ineffectice against perennial yellow and purple nutsedges. Echelon, Specticle, and Pennant will provide some pre-emergent control of annual nutsedges.