Warm season turfgrass species are species that are most productive when summer temperatures exceed 70 degrees Farenheit. These species come out of dormancy later in spring than cool season grasses and enter dormancy earlier in the fall. This causes the lawn to stay brown longer at both ends of the growing season as compared with cool season grasses. Some of these grasses can have an attractive aesthetic appeal even when left un-mowed.
There are many warm season turfgrass species and varieties available for use in the landscape. Many of these species are adapted to areas in the United States with hot summers and winter temperatures above freezing.