Hi-Yield Weed & Feed 15-0-10 combines a post-emergent broadleaf weed killer with lawn fertilizer to feed grass while controlling weeds. It effectively targets dandelion, chickweed, knotweed, plantain, henbit, spurge, and many other broadleaf weeds in centipede, bahia, bermuda, zoysia, bluegrass, perennial ryegrass, bentgrass, and fescue lawns. For best results, apply to a moist lawn and water in within 24 hours. One bag covers up to 4,000 square feet.