Las Cruces Yard Guide
Why Is My Lawn Turning Brown?
A brown lawn in Las Cruces isn’t always a dying lawn. Bermuda goes tan every winter on purpose. But brown patches in summer usually mean something is wrong with the water, the soil, the mowing or, less often, pests. Here’s how to find the cause with a few simple tests and fix it.
Updated September 2026. Lawn guidance matches our Bermuda lawn care guide.
Quick answer
Why is my lawn turning brown in Las Cruces?
In winter, Bermuda lawns turn brown because they go dormant, which is normal. In summer, brown patches are usually caused by sprinkler coverage gaps or not enough water, followed by overwatering, dull or low mowing, dog urine, compacted soil, and less often grubs or disease.
Start with water. Most brown lawns we see in Las Cruces have a sprinkler problem, not a disease. The tests below take about 30 minutes.
Brown lawn causes at a glance
|
What you see |
Likely cause |
|---|---|
|
Whole lawn tan, November to March |
Normal dormancy |
|
Dry brown patches in summer |
Sprinkler gaps or drought |
|
Brown and soggy, mushy |
Overwatering, poor drainage |
|
Small round spots with green rings |
Dog urine |
|
Grass lifts like carpet |
Grubs |
|
Circles that stay dead in spring |
Spring dead spot |
Dormant or dead?
Is my lawn dormant or dead?
Bermuda goes dormant and tan from about November to March in Las Cruces. Tug a handful: dormant grass holds firm and the crowns at the soil are white or green inside. Dead grass pulls out easily and the roots are brown and brittle.
What’s the tug test?
Pull gently on a brown patch. If it resists and you see green at the base, it’s dormant or stressed, not dead.
Should I water a dormant lawn?
Lightly, every 3 to 4 weeks if it’s dry. Dormant roots still need some moisture through winter.
When will it green up?
Usually late April into May, as soil warms. Don’t fertilize until it’s actively growing.
Test it
How do I find the cause of brown spots?
Run each sprinkler zone and watch for dry spots, set out a few cans to check coverage, push a screwdriver into the soil to check moisture depth, tug the brown grass to check roots, and look at the mower blade. Those five checks find most causes.
1
Watch each zone run
Look for broken heads, tilted heads and spray blocked by grass or plants.
2
Do a can test
Set flat cans around the lawn, run the zone 15 minutes, and compare the water in each.
3
Screwdriver test
A screwdriver should push 6 inches into moist soil. If it won’t, the soil is dry or compacted.
4
Tug test
Grass that lifts like carpet with no roots points to grubs.
5
Check the mower
Torn, frayed tips turn brown. Sharpen the blade and don’t scalp.
Fixes
How do I fix a brown lawn?
Match the fix to the cause: repair or adjust sprinklers for coverage gaps, water deeply about 1 inch a week in summer, cut back if the soil stays soggy, aerate compacted soil, mow at 1 to 1.5 inches with a sharp blade, and flush dog spots with water.
|
Cause |
Fix |
|---|---|
|
Sprinkler coverage gaps |
Repair heads, adjust arcs, fix pressure |
|
Not enough water |
About 1 inch a week in summer, deeply, on your watering days |
|
Overwatering |
Water less often; fix drainage and leaks |
|
Compacted soil |
Core aerate in summer while Bermuda is growing |
|
Scalping or dull blade |
Mow at 1 to 1.5 inches; sharpen the blade |
|
Dog urine |
Water the spot right away; train to one area |
|
Grubs |
Confirm with a tug test; treat if many per square foot |
|
Spring dead spot |
Reduce late-season nitrogen; improve drainage |
Most brown patches trace back to irrigation. See how to find a sprinkler leak and our sprinkler repair service.
Summer
How much should I water a brown Bermuda lawn in summer?
About 1 inch a week in late spring and 1 to 1.25 inches in the hottest months, applied deeply on your three City watering days before 10 a.m. Short daily watering keeps roots shallow and makes brown spots worse.
What are the watering rules?
Three address-based days a week, and from April 1 to September 30 only before 10 a.m. or after 6 p.m.
Why won’t water soak in?
Compacted soil and thatch make water run off. Cycle-and-soak, running each zone twice with a break, helps.
Is it worth saving?
If most of the lawn is thin and weedy, it may be time to shrink it or convert part to xeriscape.
Prevention
How do I keep my lawn green in Las Cruces?
Keep sprinklers adjusted and repaired, water deeply rather than often, mow at 1 to 1.5 inches with a sharp blade, feed lightly each month from May to September, aerate when soil gets hard, and use iron if the lawn turns yellow in alkaline soil.
Yellow instead of brown? See iron chlorosis.
Related guides and services
Brown lawn FAQs
Lawn going brown?
We check sprinkler coverage, fix broken heads and leaks, and set a watering plan that works with the City schedule. Free, written estimate.
Las Cruces Landscaping Group
1921 Santa Ines Drive, Las Cruces, NM 88011
(575) 270-0676. Mon to Sat, 7 a.m. to 7 p.m.
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