The Andersons 21-22-04 Pre-emergent Fertilizer with Mesotrione, 40 lb. is specially formulated for use during seeding, sodding, sprigging, plugging, overseeding, or reseeding. Its homogenous granules feature patented, controlled-release nitrogen, ensuring continuous feeding for healthier, more resilient lawns. This fertilizer is suitable for a variety of grass types including Kentucky Bluegrass, Centipedegrass, tall fescue, fine fescue, and perennial ryegrass. for home lawns, recreational areas, golf courses, and sod farms, it supports robust growth and helps maintain a lush, green landscape.