Jesse from Des Moines, Ia writes,
Quackgrass - Is Q4 effective at killing quackgrass?
Are there any chemicals available through your company that can eradicate quackgrass?
Quackgrass is a grassy weed, so you need a product labeled for grassy weeds. Certainty is our most popular product for quackgrass and other grassy weeds.
Answer last updated on: 03/16/2012