Scotts 21025-1 Turf Builder Bonus S Southern Weed & Feed is a lawn fertilizer and herbicide that helps control dollarweed, clover, and other listed weeds in St. Augustine, centipede, zoysia, and carpetgrass lawns. It also helps prevent runoff and builds thick, green turf. Apply when grass and weeds are actively growing, but only when the grass is dry. Water in immediately after application. Do not apply more than twice per year or during the winter dormancy period.