If you want to plant a lawn this year, add Kentucky bluegrass to the top of the list. Bluegrass is one of the best lawns you can choose for your yard. This is especially true if you live in a cool region of the United States. Bluegrass prefers cooler temperatures. There are two ways to plant bluegrass. You can choose sod, or you can choose to seed your yard. Many people choose to seed their yard.