Stop weeds before they start with Vigoro Crabgrass & Weed Preventer. This product prevents listed grassy and broadleaf weeds up to 4 months, including crabgrass, barnyardgrass, foxtail, oxalis, chickweed, Poa annua, and henbit. It provides both pre- and early post-emergence control of crabgrass. Vigoro Crabgrass & Weed Preventer is for use on Bentgrass (creeping), Bluegrass (Kentucky), Fescue (fine), Fescue (tall), Ryegrass (perennial), Bahiagrass, Bermudagrass, Buffalograss, Carpetgrass, Centipedegrass, Kikuyugrass, St. Augustinegrass, and Zoysiagrass. Apply in the spring or fall for the control of weeds. We recommend using a spreader to apply this product (please refer to spreader settings on product label). One 17 lb. bag of Vigoro Crabgrass & Weed Preventer covers 5,000 sq. ft.