Scotts ® STEP ® 1 for Seeding Starter ® Lawn Food with Weed Preventer not only has the strength to prevent pesky weeds, but also helps grow a newly seeded/over seeded lawn. This product will prevent the toughest lawn weeds including Large crabgrass, Smooth crabgrass, Dandelion, Common Chickweed, Ground Ivy, Yellow nutsedge, and more. Scotts ® STEP ® 1 for Seeding Starter ® Lawn Food with Weed Preventer is for use on Kentucky Bluegrass, Tall Fescue, Perennial Ryegrass, Centipedegrass as well as fine fescues (creeping red, chewings and hard).