The first thing you'll want to look at it is the color of the lawn. Healthy grass is a bluish-green shade. Lackluster grass that is brown or tan in color is likely unhealthy. The colors may appear in larger areas or small patches.
The grass may appear matted. It may be gray or pink, depending on the type of fungus that has caused it. Brown patch may start out as a small patch of brownish grass, but can quickly spread and damage your entire lawn.
Bare or Brown Spots
Brown or bare spots are not a good sign. While they are more obvious, when you see brown spots or bare spots, your lawn is extremely stressed and some damage has already been done. Begin watering regularly.
It's Noticeably Wilting
One of the earliest and most obvious signs of dehydration in grass is wilting, when blades begin to curl over instead of standing up straight. If you don't take action right away, you will soon see the grass start to change color (which we discuss in more detail below).
Unsightly yellowing or discoloration
It can change landscapes bit by bit, carrying away sediment, pebbles, and rocks. It can also carry away your soil. Too much water can lead to yellowing of the grass because the nutrients that keep your grass green are leaving with the water.
You might think that watering a little bit every day is a smart approach, but you'd be wrong. It's better to water “deeply and infrequently,” Cutler says. About a third of an inch every two to three days is a good goal.
Start by raking dead grass spots to loosen the soil and remove the expired blades. Lightly rake the healthy areas to get rid of dying grass and aerate the soil for root stimulation. Once you have the land prepared, take a rotary seed spreader and lay down new grass seed over the dead spots.
In most cases, discoloration is the most obvious sign, as grass will turn yellow, tan, or brown in spots. Keep in mind, though that it's not always a disease that can cause this.
Brown patches on grass are just one sign that your lawn is dealing with a fungus problem. You may also notice stringy red threads, mushrooms, and other forms of fungus and fungal diseases. Understanding common fungal threats can help you identify the issue in your lawn.
The pattern of brown grass on your lawn can also tell you if it is dead or dormant. If there are various areas or circles of brown grass, that can point to these spots being dead. However, when your whole lawn is the same brown color, the grass is more than likely dormant.
For a terrible lawn, we would want to perform aeration and overseeding as soon as it makes sense. We'd follow that up with a soil test to see what other needs the lawn might have, followed by a full lawn care program including fertilization, and grub prevention. Then, we'd want to aerate and overseed yet again.
Cool-season grasses may turn brown and look dead in summer if they're forced into dormancy due to heat and drought. When they're brown in spring, that can signal a tough winter just passed, especially if low snowfall left grass without much insulation.
Nitrogen-deficient turfgrass turns yellow and has reduced vigor. Iron deficiency is common in alkaline soils. Symptoms of iron deficient turf include yellow or bleached spots, which give leaf blades a mottled appearance. Potassium deficiency causes leaves to turn yellow and brown on margins.
On the other hand, watering longer but less frequently, “deep watering,” produces deep roots that mean lawns can better survive periods of drought. The ideal watering schedule is once or twice per week, for about 25 to 30 minutes each time.
A lawn should be watered for about one inch per week, so how much water does my lawn need? The answer is that it usually takes up to 30 minutes to get a half inch of water. Watering 3 times per week equals to an inch of water on a lawn.
Avoid watering grass on a hot afternoon when it's 95 degrees or higher. The best time to water grass is at dawn or in the early evening. Water deeply three times a week instead of a little water daily. Test whether your sprinkler system is watering your lawn evenly.
If it does look worse after mowing, like the left side of the picture below, chances are you're either cutting too much off at once, or mowing with a dull blade. Mowing properly can help your lawn look terrific. Mowing improperly can encourage weeds and browning.
If you have areas of dead turf, you'll need to re-seed them. Some areas will need to be scraped clean, soil added, and seeded. However, some areas may just warrant slice-seeding to repair them. Either way, they aren't coming back on their own.
If you notice brown or yellow patches throughout your lawn, this is a good indication that the grass isn't getting enough water.
When to Water the Lawn. If you find your lawn has taken on a grayish cast or appears to be dull green, it's telling you that it needs water. You can also check your lawn by walking on it: If your footprints don't disappear quickly, it's because the grass blades don't have the needed moisture to spring back.