Introduction
A brown lawn can look alarming.
When grass loses its green color, most homeowners immediately assume it is dying. But depending on the grass type and time of year, brown turf may be doing exactly what it is supposed to do.
Dormancy is a survival response.
The grass slows its growth and reduces activity when conditions are unfavorable, but the important parts of the plant remain alive. Once growing conditions improve, healthy dormant turf can begin producing green growth again.
Dead grass is different. Once the crown and root system have died, watering, fertilizing, or waiting for a different season will not bring that individual grass plant back.
So, how can you tell if brown grass is dead or dormant?
The answer starts with knowing what type of grass you have and why it turned brown in the first place.
Dormant Grass Is Still Alive
Dormancy is basically a lawn’s way of protecting itself.
When temperatures move outside the grass’s preferred growing range or moisture becomes limited, the plant can slow down its normal activity. The leaves lose their green color, but the crown and roots can remain alive.
When favorable conditions return, growth resumes.
This is particularly noticeable with warm-season grasses in Northwest Arkansas.
Bermuda and Zoysia thrive during warm weather. As temperatures cool in fall, they gradually lose color and enter winter dormancy. In our area, that usually happens after the first frosts in late October or November. A healthy Bermuda lawn can look completely brown in January and still green up normally the following spring.
That winter color does not mean the lawn needs to be replaced.
If you’re unsure which turf you have, our guide to the best grass types for Northwest Arkansas explains how Bermuda, Zoysia, and tall fescue behave in our transition-zone climate.
Start With the Time of Year
The season provides one of the strongest clues.
If your Bermuda or Zoysia lawn gradually turns tan or brown as temperatures drop in late fall, dormancy is the likely explanation.
If the same lawn develops an isolated brown area in the middle of active summer growth while everything around it remains green, we start looking for another cause.
Tall fescue works differently.
Fescue is a cool-season grass. It generally stays green during periods when Bermuda and Zoysia are dormant, but Northwest Arkansas summers can be difficult for it. Extended heat, drought, shallow roots, and disease can all cause fescue to thin or brown during summer.
Our local climate is one reason identifying the grass type matters so much. What is perfectly normal for one lawn could indicate significant stress in another.
Look at the Pattern of Browning
Next, step back and look at the entire lawn.
Dormancy caused by seasonal temperature changes tends to affect the lawn relatively evenly.
The transition may not be perfectly uniform because sunny areas, shaded sections, slopes, and different soil conditions warm and cool at different rates. But you should generally see a broad change across the same type of turf.
Actual damage is often more irregular.
Look for:
- Individual dead patches surrounded by healthy grass
- Circular or expanding brown areas
- Long brown strips
- Damage concentrated near sidewalks or driveways
- Bare soil appearing within the brown area
- One irrigation zone declining while others remain healthy
- Areas that pull away from the soil easily
The shape and location of the damage can help narrow down what happened.
Our guide on why your lawn has bare spots explains how compaction, pets, disease, grubs, shade, scalping, and chemical damage can create localized turf loss.
Check the Crown of the Grass
The grass blade is not the most important part of the plant when you’re determining whether it is alive.
The crown is.
The crown sits near the soil surface and is the growing point from which new leaves and roots develop. Dormant grass may have completely brown blades while the crown remains viable.
If conditions are appropriate and you’re examining a small questionable area, look closely near the base of the plant.
Healthy dormant turf may still feel firmly attached to the soil and show living tissue close to the crown.
Dead turf often becomes dry and brittle throughout the plant.
This is not always easy to judge visually, which is why we never rely on color alone.
Try the Tug Test
A simple tug can provide another clue.
Grab a small handful of brown grass and gently pull upward.
Dormant grass with a healthy root system should generally remain anchored in the soil.
If large pieces of turf lift away with very little resistance, the root system may be severely damaged.
This can happen with certain insect problems. Grubs, the larvae of Japanese beetles and June beetles, feed on grass roots and can leave turf that rolls or pulls back almost like loose carpet. They feed most heavily from late summer into fall, so grub damage often shows up as brown patches in September and October, right when homeowners expect Bermuda to start going dormant. Moles or armadillos digging in the lawn are another clue.
Fall armyworms cause a different pattern. They chew grass blades rather than roots, so the turf turns brown fast, sometimes in just a few days, but stays anchored. Established Bermuda usually recovers from armyworm damage.
However, the tug test is only one diagnostic tool.
Grass may have weak roots because of several problems, so easy removal does not tell you the exact cause. It simply tells you that something more serious than normal leaf discoloration may be happening below the surface. Our grub control page covers what to do if grubs are the problem.
Give the Lawn Time to Respond to the Season
Sometimes the best test is simply watching what happens when growing conditions return.
Healthy dormant Bermuda and Zoysia should begin producing new green growth as soil and air temperatures warm in spring. In Northwest Arkansas, that typically happens from late April into May, once nights stay consistently warm. Zoysia is often a little slower than Bermuda.
The green-up may not happen everywhere at exactly the same time. South-facing areas and sunny locations often warm earlier, while shaded sections may take longer.
This uneven transition can make homeowners nervous.
They see green grass in one part of the yard and brown grass somewhere else and assume the remaining brown area is dead.
Give the turf enough time to respond to consistently warmer conditions before making that conclusion. If an area is still brown by early June, it is time to look closer.
Aggressively mowing dormant grass because you are trying to force it to green up faster can create additional problems. Our article on why your lawn can look worse after scalping or early spring mowing explains why timing matters.
Spring Dead Spot: When Bermuda Doesn’t Come Back
If your Bermuda lawn greens up in spring but leaves behind round, straw-colored patches, the cause is often spring dead spot.
Spring dead spot is a fungal disease and one of the most common problems in Bermuda lawns in Northwest Arkansas. The patches can be a few inches to a few feet across and often come back in the same spots year after year, sometimes forming rings. It is most common in Bermuda lawns that are at least a few years old.
The tricky part is the timing. The fungus attacks the roots in the fall, while the grass is going dormant. You don’t see the damage until spring, when the rest of the lawn greens up and those patches don’t. That makes it easy to mistake for slow green-up.
The grass inside the patches is dead. Bermuda will slowly creep back in over the summer, but the spots can return the next year. Heavy late-season fertilizing and thick thatch can make it worse. Prevention usually involves a properly timed fall fungicide treatment and adjusting fertilization. See our lawn disease treatment page for more.
Winterkill: When Cold Weather Actually Kills the Grass
Dormancy protects Bermuda from normal winter weather, but extreme cold can still kill it.
Hard freezes, especially when they follow a warm spell, can kill Bermuda that has started to come out of dormancy. Ice storms and long stretches of bitter cold, like the deep freeze Northwest Arkansas saw in February 2021, can do the same.
Winterkill is most common in:
- Shaded areas
- Low spots with poor drainage, where ice and water sit
- Lawns that were mowed very short or scalped heading into winter
- Lawns that went into winter stressed from drought or disease
Unlike spring dead spot, winterkill usually appears as larger, irregular areas rather than neat circles.
Summer Browning Requires a Different Diagnosis
A lawn turning brown in July is a different situation from Bermuda turning brown in December.
During summer, brown grass may be experiencing heat or drought stress.
Grass can temporarily reduce growth during severe environmental stress without being completely dead. However, prolonged heat and inadequate moisture can eventually cause permanent turf loss, particularly when roots are shallow.
This is a common issue with tall fescue in Northwest Arkansas.
Fescue performs well during cooler weather but can struggle when summer temperatures remain high. Compacted soil, shallow watering, and weak roots make the problem worse. So does the shallow, rocky topsoil found in many NWA yards, which dries out quickly.
If your lawn looks healthy during spring and then consistently declines when summer arrives, our article on why your lawn looks good on top but is dying underneath explains how root health affects summer survival.
Disease Can Look Like Dormancy From a Distance
Brown grass is also one of the most common symptoms of lawn disease.
The difference is usually in the pattern and timing.
Dormancy generally follows predictable seasonal conditions. Disease may develop in irregular patches, expand over time, or appear when the rest of the lawn should be actively growing.
Northwest Arkansas heat and humidity can create favorable conditions for several fungal problems. Besides spring dead spot on Bermuda, watch for:
- Brown patch on tall fescue: brown, irregular patches during hot, humid summer weather.
- Large patch on zoysia: orange or brown rings that show up in spring and fall, right around the time zoysia is going into or coming out of dormancy. This timing makes it easy to mistake for normal dormancy.
If brown areas appear suddenly during the growing season, especially in patches, do not assume the lawn is simply going dormant.
Our guide on how to tell if your lawn has a fungal disease covers the patterns and symptoms homeowners should watch for.
Watering Brown Grass Does Not Always Make It Green
Another common reaction to brown grass is turning on the sprinklers.
Water helps when moisture stress is actually causing the discoloration.
It does very little if the grass is naturally dormant because of cold temperatures, and it will not revive turf that is already dead.
Too much water can also create new problems.
Constantly wet soil reduces oxygen around the roots and can increase conditions favorable to certain lawn diseases.
Before increasing irrigation, check the soil and consider the season, grass type, and pattern of discoloration. During the growing season, most established lawns here need about 1 inch of water per week, including rain.
If your lawn turns brown during summer even though you’re already irrigating, read why your lawn turns brown in summer even when you water it.
What Should You Do If the Grass Is Actually Dead?
If an area is truly dead, the existing grass will not recover.
But before repairing it, figure out what killed it.
If you reseed an area without correcting compacted soil, the new grass may struggle too. If disease caused the original damage, simply adding seed does not address the disease. If shade is the problem, repeatedly planting a sun-loving grass in the same location will probably lead to the same result.
The repair method also depends on your turf type.
Tall fescue is commonly repaired through seeding and overseeding. Warm-season grasses such as Bermuda and Zoysia spread differently and may require a different approach depending on the size and condition of the damaged area.
Diagnosis should come before repair.
Frequently Asked Questions
Will dormant grass turn green again?
Yes, if the grass is healthy and truly dormant. It should resume active growth when temperature and moisture conditions return to a favorable range for that grass type.
Is brown Bermuda grass dead in winter?
Usually not. Bermuda is a warm-season grass and naturally becomes brown or tan when it enters winter dormancy in Northwest Arkansas.
When does Bermuda grass green up in Northwest Arkansas?
Usually from late April into May, once soil and nighttime temperatures stay warm. Shaded areas and cooler springs can push it later.
Does Zoysia turn brown in winter?
Yes. Zoysia is also a warm-season grass and normally loses its green color during winter dormancy.
Why are there dead circles in my Bermuda lawn in spring?
Round patches that stay brown after the rest of the lawn greens up are often spring dead spot, a fungal disease common in Bermuda lawns in Northwest Arkansas.
Can tall fescue go dormant in summer?
Tall fescue can slow its growth and become brown during severe heat and drought stress. However, prolonged stress can also kill individual plants, so summer browning should be monitored carefully.
Should I fertilize brown dormant grass?
Not simply because it is brown. Fertilization should be timed according to the grass type and its active growth cycle. Applying fertilizer at the wrong time will not force dormant grass to become green. For Bermuda, heavy fertilizing in late summer or fall can actually increase the risk of spring dead spot.
How long should I wait before deciding brown grass is dead?
It depends on the grass type, season, and cause of browning. For warm-season turf coming out of winter dormancy, wait for consistently favorable spring conditions and normal green-up before assuming remaining brown areas are dead. In Northwest Arkansas, if Bermuda or zoysia is still brown by early June, it is worth having it checked.
Final Thoughts
Brown does not automatically mean dead.
For Northwest Arkansas homeowners, the first thing we want to know is what type of grass we’re looking at and when the color change happened.
A brown Bermuda lawn during winter may be perfectly healthy. A spreading brown patch during active summer growth tells us something very different. So do brown circles that refuse to green up in May.
At 1st Impressions Lawn & Tree, we look at the timing, turf type, roots, soil, moisture, and pattern of damage before deciding what a brown lawn needs. That distinction matters because dormant grass needs time and the right growing conditions, while dead or damaged turf requires us to identify and correct the underlying problem before repairing it.
Understanding that difference can save you from applying fertilizer, water, seed, or treatments your lawn never needed in the first place.
