Scotts Turf Builder WinterGuard Fall Weed & Feed. Treat your lawn in the fall for a better lawn next spring. This weed killer plus lawn fertilizer controls over 50 listed lawn weeds, including clover, dandelion, plantain, morning glory, chicory, evening primrose, and purslane. Can be used on Bahiagrass, Bermudagrass, Bluegrass, Centipedegrass, Fescue, Ryegrass, or Zoysiagrass. Apply on a calm day when weeds are actively growing and temperatures are consistently between 60 Deg F and 90 Deg F. Do not water your lawn for 24 hours after application or apply if rain is expected within the next 24 hours.