Contains the newest technology with Dimension® Crabgrass Control Herbicide. Can be applied up to 4 weeks later than other crabgrass preventers. Controls crabgrass both BEFORE and AFTER it germinates. Controls crabgrass all season long. Also controls bittercress, spurge, chickweed, henbit and many other grassy and broadleaf weeds. Provides 25% slow-release nitrogen and is a clear, non-staining formula. Provides the nutrients needed for a beautiful, green, thick lawn. Does not contain phosphorus. Please note you cannot seed for 4 months after applying.