 you'll want to put down a pre-emergent before Labor Day. So we've got about a month. You don't want to put it down yet, but about a month from now, you'll put down a crabgrass preventer, and that'll keep you from having henbit, chickweed, dandelion, clover, and all the rest of it growing, and also the annual bluegrass. It'll keep you from having those weeds in your yard if you get it down before Labor Day. And that's when I like to put this down. It's just the late summer, early fall rains.