Easy one-step application for spring lawn care. Stops crabgrass all season and can be applied up to 4 weeks after crabgrass emerges. Kills dandelions and up to 250 other tough lawn weeds as listed, to the root. Feeds your lawn for up to eight weeks with a zero-phophorus 24-0-6 formula. Do not use this product on St Augustine grass, colonial bentgrass, dichondra or carpet grass as serious lawn injury will resu. Covers 5,000 sq. ft..