What kills crabgrass without damaging lawns?

Answer by  sanityrose (2664)

They best remedy for ridding your lawn of crabgrass, while protecting your lawn, is with preemergent herbicide. The best time to use the herbicide is in early Spring. To assure results, do not mow the grass before applying, attack while young, and spay after dusk. Be diligent to rid this notoriously stubborn grass and begin prevention early in the season.

Answer by  hmmm (290)

There is a special king of fertilizer that kills weeds and crabgrass but also puts down real grass seed. I know it sounds weird to use fertilizer, but it works. I used it on mine and my yard looks much better. You can get it at ace or any hardware store.