BioAdvanced Season Long Weed Killer For Southern Lawns, Herbicide, 10 lb Granule product contains a proven blend of weed killers to kill existing weeds* plus a residual herbicide to keep them from coming back for up to 6 months. This product starts working immediately to stop weed growth until weeds* are dead within weeks. WHEN TO APPLY: • Apply when - weeds are small and actively growing - temperatures are between 50–90˚F. • May be applied to dry or (for best results) to dew-wetted lawn. • To prevent Crabgrass and Goosegrass apply early spring before the temperatures are regularly in the lower 80˚F range. • To prevent Annual Bluegrass (Poa annua) apply August - December. • Lawns may be seeded 12 months, sodded 6 months, and spried 12 months after applying this product. MOWING: • If the lawn needs mowing, do it 1 to 2 days before (for best results) or 1 day after applying this product. • Clippings from the first three mowings should be left on the treated area. Do not use the clippings from the treated areas as mulch or compost around flowers, ornamentals, trees, or in vegetable gardens. WATERING: • If lawn is dry, water 1 to 2 days before using this product. • Do not water for at least 24 hours after application or apply if rain is expected within 24 hours.