Step 1 | 18-0-4 25% SCU .38 Prodiamine Pre-emergent Crabgrass Control and Lawn FertilizerStep 1 of The Mill 4 Step Lawn ProgramEarly Spring Pre Emergent Weed Prevention + Fertilizer (Apply mid March April 15) Stop weeds before they ever show up and give your lawn the nutrients it needs to wake up strong in spring. This professional grade pre emergent fertilizer creates a protective barrier in the soil to prevent crabgrass and other annual weeds from germinatingso your grass grows without competition. With slow release nitrogen for steady