As of 2015, good nutgrass herbicides include Basagran, SedgeHammer and Spectracide Weed Stop for Lawns, according to TulsaWorld.com. Users of Amazon.com give the herbicides 3.9, 4.4 and 3.8 out of five stars, respectively, while DoMyOwnPestControl.com also gives the weed killers favorable reviews.
Basagran’s active ingredient is 42 percent Bentazon, which effectively controls yellow nutgrass and certain broadleaf weeds. The herbicide can be mixed with other weed killers and applied with a hose or a pump sprayer.
The active ingredient in SedgeHammer is Halosulphuron, which is effective against yellow and purple nutsedge. The herbicide inhibits cell division and halts plant growth in roots and shoots without affecting turfgrasses and other established ornamentals.
Sulfentrazone, one of the active ingredients in Spectracide, gives good control of annual nutsedges and does not harm turfgrassses. Spectracide kills weeds within hours and is formulated to kill more than 200 weed types.