You water it. You mow it. You even fertilized last month. But there they are: ugly brown patches scattered across your Hinesville lawn, mocking all your effort. If this sounds familiar, you are not alone. Brown patches are one of the most common lawn complaints we hear from Liberty County homeowners, and the causes are more varied than most people realize.
At A&P Lawn Care & More, we diagnose and treat brown patches in lawns across Hinesville, Fort Stewart, Midway, and the greater Liberty County area every season. Here is our comprehensive guide to figuring out what is wrong with your lawn and, more importantly, how to fix it.
Cause #1: Large Patch Disease (Brown Patch Fungus)
This is the number one culprit for brown patches in Liberty County lawns, and our humid coastal climate is practically a breeding ground for it.
What it looks like: Circular patches of brown or yellow grass ranging from a few inches to several feet in diameter. The edges of the patches often have a darker "smoke ring" border, especially visible in the early morning dew. The grass blades pull out easily and may look water-soaked at the base.
When it strikes: In our area, Large Patch disease is most active in fall (October-November) and spring (March-April) when temperatures are between 50 and 80 degrees and humidity is high. Unlike what many people assume, it is not a summer disease in the South.
What causes it:
- Excessive nitrogen fertilization in fall
- Overwatering or poor drainage
- Thick thatch layer trapping moisture
- Mowing too low
How to fix it:
- Apply a fungicide containing azoxystrobin or propiconazole at the first sign of symptoms
- Reduce watering frequency (water deeply but less often)
- Improve air circulation by removing thatch
- Avoid fertilizing until the disease subsides
- Raise your mowing height to reduce stress
Prevention: The best defense is a proper fall fertilization schedule (stop nitrogen applications by September in our area) and good cultural practices. Professional seasonal maintenance includes monitoring for fungal issues before they become severe.
Cause #2: Chinch Bugs
These tiny insects are a major problem in Liberty County, particularly in St. Augustine grass lawns during the summer months.
What it looks like: Irregular patches of yellowing grass that gradually turn brown and die. The damage usually starts in the sunniest, driest parts of the lawn and spreads outward. Unlike fungal diseases, chinch bug damage does not form neat circular patterns.
When it strikes: June through September, peaking during the hottest, driest weeks of summer.
How to identify them: Part the grass at the edge of a brown patch and look for small (1/8 inch) black bugs with white wings. An easy test is the "float test": push a coffee can with both ends removed into the soil at the edge of a damaged area, fill it with water, and wait 5 minutes. Chinch bugs will float to the surface.
How to fix it:
- Apply a granular insecticide containing bifenthrin to affected areas and a 5-foot buffer zone around them
- Water the insecticide in lightly after application
- Reseed or plug dead areas once the infestation is controlled
Prevention: Maintain a healthy lawn with proper watering and fertilization. Chinch bugs target stressed grass, so regular lawn care that keeps your turf vigorous is the best prevention.
Cause #3: Drought Stress
Even though Liberty County gets decent annual rainfall, our summer pattern of intense heat combined with sporadic rain creates drought stress conditions that surprise many homeowners.
What it looks like: Grass blades fold or curl inward, turn a blue-gray color, and eventually brown if the stress continues. Footprints remain visible in the lawn for an extended period because the grass blades lack the moisture to spring back.
When it strikes: Primarily June through September, especially during dry spells between summer thunderstorms.
How to fix it:
- Water deeply (about 1 inch) once or twice per week rather than light daily watering
- Water in the early morning (before 10 AM) to minimize evaporation
- Raise your mowing height during drought periods
- Avoid fertilizing drought-stressed lawns
Prevention: Proper irrigation practices are your best defense. If your lawn relies solely on rainfall, consider installing a basic sprinkler system or hose-end sprinkler on a timer. Contact A&P Lawn Care for advice on optimizing your watering schedule for Liberty County's climate.
Cause #4: Soil pH Issues
This is a sneaky cause of brown patches that many Hinesville homeowners overlook. Our coastal Georgia soils tend to be naturally acidic, with pH levels often falling below 5.5. Most lawn grasses prefer a pH between 6.0 and 7.0.
What it looks like: General thinning and yellowing that may appear as uneven patches, often in areas where soil conditions vary across the yard. The grass does not respond well to fertilizer applications.
When it strikes: Year-round, but most noticeable during the growing season when you expect the lawn to look its best.
How to fix it:
- Get a soil test from the Liberty County Extension Office (inexpensive and invaluable)
- If pH is below 6.0, apply pelletized lime according to the soil test recommendations
- Lime takes 2 to 3 months to fully adjust soil pH, so be patient
- Retest annually until pH stabilizes in the ideal range
Prevention: Annual soil testing and lime applications as needed. This is one of the most cost-effective things you can do for your lawn, yet most homeowners never do it.
Cause #5: Grub Damage
White grubs, the larvae of Japanese beetles, June bugs, and other beetles, feed on grass roots just below the soil surface.
What it looks like: Irregularly shaped brown patches where the grass feels spongy underfoot. The damaged turf peels up easily like carpet because the roots have been eaten. You may also notice increased bird, armadillo, or raccoon activity as they dig for grubs.
When it strikes: Late summer through fall is when grub damage becomes visible, though the larvae have been feeding since midsummer.
How to fix it:
- Apply a curative grub control product containing trichlorfon or carbaryl if you find more than 5 grubs per square foot
- Water the product in immediately after application
- Reseed or sod damaged areas once the grubs are controlled
Prevention: Apply a preventive grub control product containing imidacloprid or chlorantraniliprole in June or early July, before the eggs hatch.
Cause #6: Improper Mowing
Believe it or not, your mowing habits might be causing those brown patches.
What it looks like: Uneven browning, scalped areas (especially on high spots), or a general stressed appearance across the lawn.
Common mowing mistakes:
- Cutting too short: Scalping removes too much leaf blade and exposes the soil to sun and heat. Never remove more than one-third of the grass blade in a single mowing. For Bermuda grass in our area, maintain a height of 1.5 to 2 inches. See our guide on mowing frequency.
- Dull mower blades: Dull blades tear grass rather than cutting it cleanly, creating ragged tips that turn brown and are more susceptible to disease.
- Mowing wet grass: Creates uneven cuts and can spread fungal diseases.
When to Call a Professional
If you have tried the solutions above and your lawn is still struggling, or if you are not sure what is causing the problem, it is time to call in a professional. At A&P Lawn Care & More, we provide comprehensive lawn care services for Hinesville and Liberty County homeowners, including diagnosis and treatment of lawn problems.
Some situations that warrant professional help:
- Large areas of damage that are spreading rapidly
- Multiple symptoms that could indicate several simultaneous problems
- Recurring issues despite your best DIY efforts
- Desire for a preventive maintenance program to avoid problems altogether
Request a free quote today and let us help you get your lawn back to the healthy, green state it should be in. We serve Hinesville, Fort Stewart, Midway, Walthourville, and all surrounding areas in Liberty County, GA.
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