Lawn material is a term used to describe the materials used to create and maintain a lawn. The most common lawn materials are SOD, GRASS, and TURF. SOD is a type of GRASS that is grown in a nursery and then cut into strips and laid on the ground. GRASS is a type of plant that is grown from seed and requires regular mowing and maintenance. TURF is a type of GRASS that is grown in a nursery and then cut into squares and laid on the ground. All three of these materials are used to create and maintain a lawn.