Grass variety is a term used to describe the different types of grasses that can be found in various climates and regions. Zoysia, Redtop, OAT, and ESPARTO are all examples of grass varieties. Zoysia is a warm-season grass that is drought-tolerant and grows well in sunny areas. Redtop is a cool-season grass that is often used for lawns and golf courses. OAT is a cool-season grass that is often used for hay and pasture. ESPARTO is a warm-season grass that is native to the Mediterranean region and is used for papermaking and basketry.