BioAdvanced 3 In 1 Weed Feed product kills and prevents Crabgrass plus other listed broadleaf and grassy weeds for 6 months including Dollar weed Dandelion Clover Chickweed and Poa Annua Apply this product when weeds are small and actively growing and temperatures are between 5090F In spring mow your lawn 2 times before applying In the fall apply no closer than 6 weeks before the first historical frost date for your area Do Not apply to Centipede grass after October 1 Only use this product on established lawns of these four Southern turf types Bermudagrass St Augustine grass including Floratam Centipede grass and Zoysiagrass Do Not use it on other types of turf Be sure to check the label for application rates