Warm and Cool Season Grasses
Lawn grasses are divided into 2 separate categories, Warm Season Grasses, and Cool Season Grasses.
As their names suggest, they are both best suited to different climatic regions. Depending on which area of the country you live, your lawn will most likely have different types of grasses. In the South, grasses that can beat the heat fair better. Whereas in the north, grasses that can weather harsh winters and cooler spring and fall seasons flourish best.