Like any other crop for sale, sod must be first grown and then harvested, transported to the consumer and then installed. The United States Department of Agriculture estimates that there are nearly 1,500 specialized, sod growing farms in the US, growing many varieties of sod on almost 370,000 acres of land. Because there are some restrictions to travel including expenses, most sod is grown and sold locally, but new strains and methods are being developed all of the time