Is Your Brown Lawn Dead or Just Dormant? 5 Signs It Will Bounce Back Before Fall

A brown lawn can be a summer bummer, but it’s very common and doesn’t usually mean your grass is dead. Turfgrasses are generally categorized as cool season and warm season depending on when they go dormant. In most cases, brown summer grass is simply dormant cool-season turf that needs a refresh.

Brown grass is not necessarily a reason to panic, especially during the hottest, driest days of summer. Browning up is a survival strategy and there are some simple signs you can check before assuming your grass is dead.

Below I’ll reveal some of the most common reasons for dying grass, signs your grass is dormant rather than dead and ready to bounce back, and tips for getting it green and healthy again by fall.

Dormant or Dead?

Grass naturally goes dormant under certain conditions (in the case of cool-season grasses, heat and drought trigger dormancy) to conserve water and protect the roots and crowns. Dormant grass comes back to life when conditions become more favorable.

Let’s take a look at some clues that can help you determine if your grass is dead or just dormant:

• Hot, dry weather. If you grow cool-season grass, temperatures are soaring, and it hasn’t rained for a while, your brown grass is probably dormant. Dormant grass looks evenly brown rather than patchy.
• Brown patches. Patchiness in your lawn is more likely to be a sign that the brown grass is dead because heat and dryness tend to affect the entire lawn. Smaller areas of brown grass could be dead due to pests, fungal lawn diseases, poor drainage, or animal urination. Pull up a small section of grass to look for grubs or other pests and mushy, soggy roots, signs of a problem deeper than dormancy.
• The pull test. Gently pull on a clump of grass in a brown area. If it resists the pull, the roots are still strong and it’s likely dormant. If the clump comes out very easily, you probably have dead grass.

Signs Grass Will Bounce Back by Fall

If you’re not sure what’s going on with your lawn, these signs are reasons for hope. These are typical signs your grass is still healthy and will green up again within a few weeks, either before or by fall.

1. The Crown Looks Healthy

The crown is the part of the plant where the roots meet the blades right at the soil level. To inspect the crown, separate the blades in a clump of grass and have a look. Use a garden tool like a trowel to dig into the soil a little if necessary.

A healthy crown is firm and white or light green. If the blades are brown but the crown still looks healthy, you likely have dormant grass that will come back to life. A mushy, brown crown is more concerning.

If you see a healthy crown, you can revive your dormant grass with regular, deep watering. Water the lawn once or twice a week, aiming for about an inch (2.5 cm) of water at a time. This is a more effective method than watering lightly every day.

2. Deep Watering Leads to New Green Growth

If you suspect your grass is only dormant due to hot and dry conditions, watering deeply should trigger some fresh, healthy growth. A burst of rain can also trigger new growth.

Water the brown grass deeply once or twice and check for growth at the base of plants a week or so later. This is a good sign to carry on with regular watering to revive the turf.

Regular, deep watering should be your focus right now. Hook up an oscillating sprinkler, like this one from the Home Depot, to a hose to give your whole lawn a good drink.

Hold off on mowing the newly growing grass and avoid using any lawn fertilizer, which can scorch stressed roots. Once the new grass is long and lush, you can start mowing your lawn again and do any necessary fertilizer applications.

3. Your Lawn is Uniformly Brown, Not Patchy

Uniform brown coloring across the lawn is actually a good sign. Dormancy is triggered in all grass when conditions turn hot and dry. The only patchiness you might see is related to regional conditions. For instance, grass will stay greener longer in shady areas and ditches, which retain more moisture.

To revive your uniformly brown lawn, you can begin regular, weekly deep watering or you can simply wait for rain. Healthy grass can stay dormant and still recover after three to six weeks.

This is important for areas under water restrictions. Check the weather for upcoming rain and determine if your grass can wait.

4. There's Moisture Below the Surface

Grass can still recover after weeks of dormancy, but there is a limit. During a serious drought, your brown, dormant grass might actually die. If you haven’t been paying attention to the duration of browning, check the soil for moisture with a simple moisture meter, like this one from Amazon.

Another way to check is to choose a brown area of grass and dig down two or three inches (5-7.5 cm). If the soil is dry above but moist down at this depth, there is still hope.

You can revive this grass with deep watering. You can also aerate your lawn in late summer or early fall to make it easier for the soil to hold onto water in the future.

5. Weeds Are Still Growing

Weeds can be a nuisance in turfgrass, but weeds can also indicate the health of your lawn during drought conditions. If your grass is browning but you still have some weed growth, this is a good sign. Many weeds are more heat-tolerant than grass and will continue to grow, indicating there is some moisture in the soil and your grass will recover.

Watering will revive your lawn at this point, but it will also support weed growth. Resist the urge to start aggressively managing weeds. Any herbicides applied now can damage your stressed turfgrass. Focus on bringing the grass back to life, then address the weeds.