No, that's a herbicide. It's a grass killer though, and may have residual. I'm not familiar with it..... you need to read the label. If your trying to get grass to grow you DO NOT want to use a grass killer with residual effect. Be careful what you put on or you won't get any grass to grow.

I thought quinclorac was a post emergent herbicide?:bigthink:

Ok glad I asked.
And 2 ton, yeah , quinchlorac is a post emergent. I sprayed it after my yard was over grown with the crap.

"Pendimethalin is an herbicide of the dinitroaniline class used in premergence and postemergence applications to control annual grasses and certain broadleaf weeds. It inhibits cell division and cell elongation. Pendimethalin is listed in the K1-group according to the Herbicide Resistance Action Committee (HRAC) classification and is approved in Europe, North America, South America, Africa, Asia and Oceania for different crops including cereals (wheat, barley, rye, triticale), corn, soybeans, rice, potato, legumes, fruits, vegetables, nuts as well as lawns and ornamental plants."

This was copied from the web. It will keep all type of seeds from germinating so if you want to seed it the spring don't use it. But by keeping the seeds from germinating the crab grass seed will not grow either. Crab grass is an annual grass. Once it is growing this chemical will not work to kill it. Applied correctly it will not harm your established grasses.