It’s impossible to have a green lawn in 100 degree weather, right?

I can’t tell you how often I walk up to a Dallas area home in the summer, the lawn almost completely brown and when I ask why it’s brown the answer is “I can’t keep it green because it’s too hot and my city has water restrictions.”  Take a look at this St. Augustine lawn in Garland.  It’s summer.  We’ve had 100 plus degree weather for weeks.  No rain for a long, long time and it’s only being watered two days per week.  It’s growing so fast the mowing crew has trouble cutting it.  All it takes to have a green lawn in the summer is watering 60 to 70 minutes per week per zone.