Ruben from Hoffman Estates writes
I currently have a mix of KBG and tall Fescue. Will this harm my lawn? I have a combination of nuts edge and Quackgrass spreading really fast.
Certainty is only for use on warm season turfgrass.
For nutsedge and other listed weeds on the label, Dismiss Turf is a great option
Unfortunately, we do not currently carry any products that are labeled for quackgrass that are safe for use in your Kentucky Blue or Fescue grass. We would recommend spot treating with something like Roundup QuikPRO and reseeding the areas. Becareful to avoid getting the product on desirable grass. If most of the lawn has been affected by quackgrass, the only sure fire way to get rid of it is to spray the entire lawn with Roundup. Spray when the lawn is growing actively, preferably in the spring. The treatment will kill the lawn grass as well as the quackgrass. After about two weeks, you may begin the replanting.
Answer last updated on: 06/22/2021
