🌿 How Often Should I Water My Lawn in Houston—and How Deep?
A Houston Lawn Care Q&A with Todd Farber, Garden Guy
When it comes to lawns in Houston’s long, humid summers, the most common question we get is:
“How often should I water my lawn—and how much is too much?”
Get a beautiful lawn with my help. Todd Farber, Garden Guy
The answer depends on one thing: watering deeply, not frequently.
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💧 Garden Guy’s St. Augustine Watering Tips
Houston lawns—especially St. Augustine—don’t need daily watering. What they need is a good soaking to reach the root zone.
✅ Water deeply to saturate the soil to a depth of about 6 inches.
✅ Water early in the morning to reduce evaporation and allow the grass blades to dry during the day—this helps prevent fungal disease.
✅ Use a rain gauge or soil moisture meter to see how much water your soil really needs before turning on the sprinklers.
Tip: Run your irrigation system for 20–30 minutes per zone, then check with a soil probe to see how deep the water reached. Adjust until you consistently hit 6 inches deep.
🌱 Build a Beautiful Houston Lawn with Garden Guy
Healthy lawns start with consistent care—watering is just one piece of the puzzle.
Mow twice weekly during peak growth and keep grass at 2½–3 inches tall.
Fertilize organically with MicroLife Multi-Purpose 6-2-4 (green bag).
Apply it:
When your grass first starts growing actively in spring
Again in June or July
And one more time in early October
When you see strong new growth, top-dress the lawn with a light layer of enriched topsoil to improve soil structure and feed beneficial microbes.
☀️ Bonus Tip: Don’t Fight Houston Heat—Work With It
If you notice brown patches or thin spots, don’t panic!
They’re often signs of shallow watering or compacted soil—not disease. Aerate compacted areas, top-dress, and return to the deep-watering method above. You’ll see improvement in a few weeks.
🧠 Garden Guy Says:
“Most lawns don’t need more water—they need smarter watering. Deep roots make a tough, heat-resistant Houston lawn.”
We hope this helps you!
If you’d like us to take a look at your lawn or sprinkler setup, just reach out. hello@garden-guy.com or 281-208-4400
🌿 Want to Know Which Plants Thrive in Houston’s Heat?
If you’re ready to go beyond lawn care and choose the right plants for Houston’s climate, we’ve got you covered.
Download our free resource:
👉 The Ultimate Houston Landscaping Guide
Inside, you’ll find:
✅ The best trees, shrubs, and flowers for Houston
✅ Pollinator favorites that attract butterflies & bees
✅ Low-maintenance picks that handle heat and drought
✅ Our personal plant list, based on 30+ years of landscaping experience
Get your free copy now and start planting smarter in Houston’s soil and sun! 🌞
— Sabrina & Todd
🌿 Garden Guy + Gal
📍 Serving Houston and Sugar Land homeowners since 1991
💬 Ask a free question anytime: AskGardenGuy.com/advice
