Chuck from Nesbit, Ms writes
Trying to kill crab grass and some broad leaf weeds
It is not recommended to apply Quinclorac 75 DF or any other herbicide when temperatures above 90 degrees Fahrenheit as this could burn turfgrass. Be sure to apply in the early morning or late evening so that the product has had time to dry before temperatures exceed 85 degrees.
Answer last updated on: 07/06/2017