Which of the following is not a warm season grass?

Kentucky bluegrass is classified as a cool-season grass, which means it thrives during the cooler temperatures of spring and fall, rather than the warmer conditions favored by warm-season grasses. Cool-season grasses like Kentucky bluegrass are most active in temperatures ranging from 60°F to 75°F, whereas warm-season grasses such as Bermudagrass, Buffalograss, and Zoysiagrass prefer warmer temperatures, generally between 80°F and 95°F, for optimal growth. This distinction is essential in landscape management and lawn care, as the choice of grass type can significantly affect the maintenance requirements, growth patterns, and overall health of the lawn based on the local climate.