Scotts 4 Step Program Step 1 Crabgrass Preventer Plus Lawn Food, 13.46 lbs. is designed to be applied in early spring, from February to April, when temperatures are still cool. This product effectively controls crabgrass throughout the season while feeding your lawn for a quick green-up after winter. It also enhances your lawn’s ability to absorb water and nutrients, promoting overall health and resilience. With an analysis of 28-0-7 and containing the active ingredient Pendimethalin, it prevents crabgrass for up to four months, making it an essential part of the Scotts 4-Step lawn care program. Model Number: