Common perennial ryegrass is a coarse textured grass that lacks winter hardiness. The new turf-type perennial ryegrasses are more winter hardy than the common ryegrasses and have a finer leaf texture, similar to Kentucky bluegrass. After the bluegrass germinates, it will usually spread and take over the ryegrass. Perennial ryegrass is established by seed only. Grass seed is usually sold in mixes or blends.
Sod is usually comes in squares or rolls that contain estabished grass, roots, and some soil.
Before it is laid, sod should be protected from heat and drying out. Clear the area to be seeded b. This will loosen up compacted soil and allow it to be graded. Be careful not to overwork the soil. Overworked soil is very fine with no clods, and it tends to crust over and crack after receiving rain or irrigation.