Ace Crabgrass Preventer with Fertilizer prevents Crabgrass for up to 4 months and feeds your lawn in one easy step. This product delivers pre and early post-emergent crabgrass control, and provides controlled release feeding up to 8 weeks. Apply in early spring or fall. Carries the Ace Promise satisfaction guarantee. • Delivers pre and early post-emergent crabgrass control • Feeds 15,000 sq. ft. • Apply early spring or fall • Prevents crabgrass up to 4 months • Controlled release feeding up to 8 weeks