Warm-season grasses thrive in the scorching sun and high temperatures of the Southern United States. They grow best when temperatures are between 75-90°F and do most of their growing in the summer. As a result, they require 25 to 35 percent less water than cool-season varieties. In the cooler weather of late-fall and winter, they go dormant, turn gold (aka brown), and won't green up again until warmer weather returns in spring. Warm-season grass species, such as St. Augustine and Hybrid Bermuda, will perform well even during extreme drought conditions.
Cool-season grasses thrive in areas with cold freezing winters and hot summers. They grow best when temperatures are between 65-80 degrees F, which is why they do most of their growing in the spring and fall.
While both warm and cool-season grasses can survive well in Southern California’s mild climate, cool-season varieties are most severely impacted by a lack of water. Therefore, if you are installing functional grass on your property, or replacing it, we recommend choosing a warm-season grass species like St. Augustine or Hybrid Bermuda that will handle this and future drought cycles better!