Norman from Marseilles, Il writes
Should I consider killing off the lawn since it is overrun with quackgrass then till in topsoil, compost and do a Soil Test?
Certainty Herbicide is only labeled to suppress or partially control quackgrass so it would not fully control it. A Non Ionic Surfactant is suggest to add to the tank mix for best results. Also, Certainty is primarily for Warm Season Turfgrasses and labeled to kill tall fescue and perennial ryegrass in warm season lawns.
Answer last updated on: 09/09/2021