Rich from Indiana writes
Since the Prime Source Quinclorac 1.5L Select Herbicide does not specifically state that it's safe to be tank mixed with another herbicide, we would suggest doing a tank mix test first to make sure there is no clumping, discoloring, or odd odors coming from the tank mix. If all is stable, we recommend testing a small area of the lawn first and observing it for several days before applying it to the whole lawn to make sure there will not be any chemical compatibility issues that could cause burn or harm to your lawn. If nothing is observed, you can go back and treat the entire lawn. Keep in mind that the Prime Source Quinclorac needs a surfactant to be used with it for the best results.
Answer last updated on: 04/25/2023
