Most grasses take on a dull purplish cast and leaf blades begin to fold or roll.
Grass under drought stress also shows evidence of tracks after someone walks across the lawn. Common bermuda grass lawns can go 5 to 7 days or longer between waterings without loss of quality . Early morning is considered the best time to water. The wind is usually calm and the temperature is low so less water is lost to evaporation. The worst time to water is late evening because the lawn stays wet all night, making it more susceptible to disease.