I have too much quackgrass in my flower beds and ivy ground cover to hand-pull it all. Can a pre-emergent be used to help get rid of it? Vickie
Quackgrass is a perennial weed that sprouts from the roots, so a pre-emergent herbicide won't have any effect on it. Only a nonselective product such as roundup, which would kill the perennials it comes into contact with also, would be effective.
Or do you possibly mean crabgrass? Crabgrass sprouts from seeds each year, so a pre-emergent herbicide can help control it.