Seed should be planted 1/4 to 1/2 inch deep in a well prepared seedbed. Spring seedings of ryegrass may occur in March, April, or May. Annual ryegrass may also be seeded mid-August to early November, depending on the location. Generally, a rate of 30 to 40 pounds per acre is used if ryegrass is seeded alone. In mixtures, 6 to 10 pounds per acre is recommended, depending upon uses and companion species. In general, the annual ryegrass component of a mix should be 20% or less since it is very competitive, due to rapid germination and good seedling vigor.