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03
Jul

Why Your Lawn May Be Turning Brown—And What You Can Do About It

Brown Lawn in San Antonio? Here’s What’s Really Going On

It’s July in San Antonio, and like many homeowners, you might be looking at your lawn wondering, “Why is it turning brown?” Don’t panic—brown grass doesn’t always mean your lawn is dead. In most cases, it’s either heat stress or dormancy, both of which are natural responses to summer’s intense conditions.

At DNS Landscaping, we help San Antonio residents decode lawn problems every day. Let’s break down the causes and what you can do to restore your turf’s health.

 

Heat Stress vs. Dormancy: What’s the Difference?

 

Heat Stress

When temperatures soar above 90°F and your lawn doesn’t get enough water, your grass may become heat-stressed. This means the blades wilt or brown, especially in direct sun, while the roots are still alive.

Signs of Heat Stress:

  • Brown or yellow patches in sunny areas
  • Footprints linger on the lawn (grass doesn’t spring back)
  • Soil feels dry and hard

Causes:

  • Infrequent or shallow watering
  • Poor soil drainage
  • Compacted soil
  • Mowing too short

 

Dormancy

Dormancy is your lawn’s built-in survival mode. During prolonged drought or high heat (like San Antonio’s Stage 4 water restrictions), many types of grass—especially warm-season varieties like Bermuda or St. Augustine—will go brown to conserve energy until conditions improve.

Signs of Dormancy:

  • The entire lawn turns uniformly tan or light brown
  • Grass feels dry, but roots are intact
  • No signs of pests or fungal issues

The good news? Dormant grass can survive for weeks or even months—as long as the roots remain alive.

 

What You Can Do to Help Your Lawn Recover

 

1. Water Deeply and Less Frequently

If allowed by local watering rules, aim to water early in the morning for better absorption and less evaporation. Deep watering (about ½ to 1 inch once or twice a week) encourages root growth and resilience.

Note: Be sure to check current San Antonio water restriction schedules before watering!

✂️ 2. Raise Your Mower Blades

Never mow too low in summer. Taller grass shades the soil, reduces evaporation, and protects the crown of the plant. Keep grass around 3–4 inches high during heatwaves.

3. Avoid Fertilizing During Stress

Fertilizer stimulates growth, which requires water—something your lawn may not have enough of. Wait until cooler temperatures return in fall before fertilizing.

4. Aerate and Mulch

Aeration helps water and nutrients reach the root zone, especially if your soil is compacted. Adding a light layer of compost or mulch around the edges can also retain moisture and reduce surface temperatures.

5. Limit Foot Traffic

Avoid walking or placing heavy furniture on brown areas. Stressed or dormant grass is more fragile and slower to recover from damage.

 

When to Call in the Pros

If your lawn isn’t bouncing back, shows patchy growth, or develops weeds or pests, it might need professional care. At DNS Landscaping, we offer customized lawn recovery and drought-adaptive landscaping services across San Antonio.

Contact us today to schedule an evaluation and keep your landscape healthy, no matter how hot the summer gets.