How Often to Water Grass in Houston, Texas

lawn watering frequency Houston, Texas

Although local rainfall usually provides enough moisture for Houston lawns in the fall and winter, they will need to be watered in the spring and summer. The amount of water needed depends on local rainfall and the grass type.

With a little guidance and an informed watering schedule for Houston, you can make certain that your lawn gets the water it needs to look lush and remain healthy.

How Much Should You Water Your Lawn?

According to experts, most grass in Houston needs minimal care. In the summertime, a reliable lawn watering frequency produces the best results. In general, Texas lawns need about an inch of water per week.

Of course, during extremely hot temperatures and low rainfall periods, you might need to increase that amount a bit. If your grass turns brown or looks damaged, you can add more time to the watering sessions.  Selecting the best grass for Texas heat ahead of time will keep your lawn in good shape as well.

What Is the Best Time to Water Grass in Texas?

The most effective time to water Houston lawns is around 4 to 5 a.m., so investing in an automatic sprinkler system is recommended. Watering this early reduces water loss due to evaporation, and gives your lawn maximum time to properly absorb the water.

How Long Should Sprinklers Run in Houston?

best time to water grass in Texas - Houston

Sprinklers run at different rates, so you should run a test to determine your device’s output. You can simply place a coffee can or two around your yard and run your sprinkler for 30 minutes. If the amount collected measures 1/2 inch, simply run your sprinkler for an hour each week.

What Are the Guidelines for Specific Grass Varieties?

Three of the most common grass varieties in the Houston area are Zoysia, Bermuda and St. Augustine grass. Experts have specific guidelines for watering each of these types.

Watering Zoysia Grass

Lawn care experts suggest giving zoysia grass 1/2 to 3/4 of an inch of water each week to a depth of 6 – 8 inches. Zoysia requires less water than other warm season grasses.

Watering Bermuda Grass

In the summertime, Bermuda grass needs approximately 1 to 1.25 inches of water each week. If your soil is sandy, you will need to water it more frequently and in smaller amounts, such as 0.5 inches of water every three days.

Watering St. Augustine Grass

St. Augustine grass thrives in hot temperatures and requires around 1 inch of water per week in the summer. In sandy soil, you should water it twice a week with 1/2 inch of water.

During the fall and winter months, you will need to do little or no watering since these varieties should be dormant then. If rainfall or temperatures vary from their norms, you may need to water your lawn occasionally during the fall.

To correctly water your grass in Houston, you need to know what type of grass makes up your lawn. While most of these grass varieties require minimal watering, they do need approximately one inch each week during their growing seasons.

How Can Landscaping Companies Help?

Houston landscaping and lawn services can advise you on watering and other issues that affect your grass. They can provide complete residential and commercial lawn services in Houston, including mowing and various lawn treatments.


John A. Taylor is President and CEO of TIS Services in Houston, Texas. He was awarded the 2013 EPA Partner of the Year Award for his water conservation efforts, sits on the state irrigation board (TXIA) and lectures on water conservation through innovative and conscientious irrigation practice. TIS focuses on sustainable landscape and irrigation solutions in the Houston market. John is a veteran of the Unites States Marine Corps and lives with his wife and children in the north Houston area.

John has blogged 13 posts here.

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