Megan from Toledo, Ohio writes
I have a ryegrass lawn in upper west Ohio. I have a quack grass infestation in different parts of my lawn. Would this product be safe to use on my grass? Considering that the quackgrass does not come up till fall, should I be putting this down in spring or summer?
Certainty Herbicide - 1.25 oz. is for warm season lawns only and cannot be used on ryegrass as it will kill it too. For treating quackgrass it would be best to spot treat with a glyphosate based product and reseed. the areas.
Answer last updated on: 03/21/2020