Saint Augustine Grass is one of the best types of grass to grow in warm, humid areas, and is very popular in Florida. It can grow well in a variety of soil types, as long as you know a few basics about how to properly take care of it. During dry times, water the Saint Augustine lawn for around a half or an hour with sprinklers two times a week. When it is the wet season of the year, only water the grass when it is needed. You will be able to tell that the lawn needs watering when the grass begin to wilt. The individual blades will begin to fold, and turn from green to a more bluish-green color.