Patrick from Florence, Al writes
Per the product label for Drive XLR8 Herbicide Crabgrass Killer: you should avoid applications of herbicides with the same site of action more than twice a season. So you could use twice in the spring and fall but should rotate after that number of applications to a different herbicide to prevent resistance if the target weeds are not killed with just the Drive. It can take drive up to 6 weeks to completely kill.
Answer last updated on: 04/01/2019
