John from Miami writes
Looking for good crab grass pre and post emergent. For St Augustine grass in Florida. It never really dies off in the winter, but spreads like crazy in summer. Can I put a pre and post emergent down within weeks of each other?
Yes, Crabgrass Control Plus 0 - 0 - 7 with 0.37% Prodiamine Herbicide can be used on St. Augustine lawns. There is no time restriction after applying this product for you to wait to apply a postemergent. You would want to apply a post whenever target weeds are actively growing and healthy.
Answer last updated on: 09/27/2021