Sod is the most popular choice for homeowners due to its instant appeal, reliability and quick installation. Your barren land will be transformed into a lush green lawn in only a few hours. Sod is grass that is already planted. Also known as turf grass, it is longer than other types of grass and grows more evenly. Sod is sold in sections with a small part of soil beneath the grass that is held together by the root system or in some instances a biodegradable material.