The health of the plant will depend on how long it takes Q4 Plus Turf Herbicide to kill weeds/crabgrass. The weeds normally will start to die within one week of application but could take up to three weeks. A second application may be needed.
Most insecticides containing the active ingredient Quinclorac, such as Q4 Plus Herbicide,
Q4 Plus Turf Herbicide does not require the use of a surfactant.
Q4 Plus Turf Herbicide can be applied with a hose end sprayer but only if can be calibrated to the rate needed per 1000 sqft.