What is turf grass? Turf grass is a species of grass known as monocots. This is because when the seed germinates, only one tiny leaf emerges. This type of grass consists of slim leaves that form a uniform ground cover that is highly tolerant of foot travel and low mowing height. Did you know that the term turf grass is defined as the individual grass plants that make up the entire lawn or “turf”. Turf is the term used to describe an entire area of “turf grasses”.