BioAdvanced 3-In-1 Weed and Feed for Southern Lawns, Fertilizer and Crabgrass Preventer, 10 lb, 4,000 Sq ft is a weed and feed that does more. Specially formulated for southern lawns, it kills listed weeds such as dollar weed, dandelion and clover. It is also a fertilizer that feeds, greens and strengthens lawns. And 3-In-1 Weed and Feed prevents broadleaf and grassy weeds, plus crabgrass up to 6 months. When used according to package directions, it is safe for and won’t harm Southern turfs, including Bermudagrass, Saint Augustine grass, Centipede grass and Zoysia grass.