Jonathan Green Black Beauty Ultra Grass Seed, 1 lb. covers 400 sq.ft. It is a blend of 3 varieties of tall fescue, 10% sod quality blue-tastic Kentucky bluegrass for quick fill-ins, and 10% frontier perennial ryegrass for the fastest germination. Suitable for both sunny and shady areas, this elite mix grown by leading sod growers across the United States germinates in 10 to 14 days.