GreenView? Fairway Formula Spring Fertilizer Weed & Feed plus Crabgrass Preventer performs three tasks: provides a crabgrass preventer lawn fertilizer and broadleaf weed killer all rolled into one application for the spring. In addition the broadleaf weed control is effective on over 200 weeds as listed on the label. Crabgrass is prevented and destroyed up to 4 weeks after germination so apply it when dandelions bloom. This formulation also features both immediate release and controlled-released nutrients that provide continuous feeding for up to 12 weeks. For use on established bahiagrass bermudagrass buffalograss centipedegrass fine fescues Kentucky bluegrass perennial ryegrass tall fescues and zoysiagrass.