Can You Overwater Your Grass? How to Avoid a Water-Logged Lawn

Water is necessary for lawns to survive and thrive. But is it possible to apply too much water on grass?

Unfortunately, the answer is yes, you can overwater a lawn.

Even though water is a vital element for grass, applying too much can lead to problems. Overwatered grass can actually struggle to grow and could potentially even die. When the soil becomes waterlogged, grass roots can drown.

In this article, we’ll talk about signs of overwatering grass that you can watch for and what you should do if you notice a problem.

Jump To:

Can You Overwater Your Lawn?
Signs of Overwatered Grass
How Much Water Does a New England Lawn Need?
How to Fix an Overwatered Lawn
FAQs About Overwatered Grass
Choosing Lawn Care in Southern NH, Northeastern MA, and Southern ME

Can You Overwater Your Lawn?

Yes, you can overwater a lawn, particularly if you have compacted soil and it’s not draining well. Photosynthesis isn’t the only fuel grass needs. Grass roots require both water and oxygen to help healthy grass grow. But waterlogged soil can prevent oxygen from reaching the roots and actually cause them to drown.

When soil stays consistently wet with overwatered grass, it also prevents roots from growing deep. With a shallow root system, lawns begin to rely on frequent watering and tend to burn up faster in heat.

A lawn that is constantly wet might also be more prone to fungal growth. Lawn fungus thrives in wet conditions.

Signs of Overwatered Grass

It can get confusing because both overwatering and underwatering can cause the lawn to turn yellow and/or brown. But when homeowners see a brown lawn they tend to assume it’s not receiving enough water and they water more. This might be causing further problems.

Signs that it’s actually an overwatered lawn include:

• A squishy, spongy surface when you walk on it (an underwatered lawn is going to have dry, cracked soil)

• Fungal growth (like turf diseases and mushrooms)

• Runoff on hardscaping

• Thatch buildup

How Much Water Does a New England Lawn Need?

Established lawns in New England typically require around one to two inches of water per week. In the springtime when it is rainy, Mother Nature might be supplying that. But during periods of drought during the summer, you may need to step up your watering efforts. 

An easy way to tell if your lawn is receiving enough water is to use a simple device called a rain gauge. This measures exactly how much rainfall took place.

Aim for a deep soak when watering the lawn as this will help water reach the root zone where it’s needed most. In addition, avoid watering the lawn late in the day or at night as this can make your lawn more prone to disease due to fungal growth.

Instead, water your lawn in the early morning. This will give plenty of time for the water to reach the lawn’s roots before evaporating (as can commonly happen in the heat of the day).

Watering in New England takes place during the growing season. You do not need to water your lawn in the winter as grass will go into dormancy during this season. Generally speaking, in New England, you can stop watering your lawn when temperatures begin to consistently fall below 40 degrees. You do not want to be watering the lawn once freezing temperatures set in.

As far as when to start watering your lawn in New England (after dormancy), you can typically wait until all of the snow has melted and the weather consistently warms up. Most of the time this is in the later part of spring.

How to Fix an Overwatered Lawn

Before you can fix an overwatered lawn, you have to figure out what’s causing it. Obviously if you’re applying too much water, you should back off on your watering habits and only apply what your lawn really needs.

However, most of the time, there’s a bigger issue at play. In many cases, the problem is that the soil is compacted and not draining well.

New England lawns are known to become easily compacted. This can make it difficult for oxygen, water, and nutrients to percolate down to the root zone. Water ends up just sitting toward the surface level. But aeration can help alleviate that compaction and produce an overall healthier lawn.

Lawn aeration is the process of pulling small cores of soil from the ground and depositing them back on the lawn where they will break down and recycle nutrients back into the soil. This goes a long way in loosening soil and reducing compaction, which will therefore improve drainage.

If you have an irrigation system, sometimes the cause of overwatered grass is a leak. An irrigation leak combined with compacted soil can be a double whammy!

FAQs About Overwatered Grass

Hopefully, this guide has given you some helpful information on spotting the signs of overwatered grass so that you can start to put solutions in place.

Can overwatering kill grass?

Yes, too much water can kill grass. We know that it often shocks people since water is so important to grass health. But as we’ve explained, when soil becomes waterlogged, grass roots can actually suffocate from lack of oxygen.

How can you tell the difference between overwatering and underwatering?

Since both overwatering and underwatering can cause a lawn to turn yellow or brown (because it’s dying), at first glance it can be confusing. However, the state of the soil should give it away. Is it soggy and squishy or is it dry and cracked? With overwatering, you’re also more likely to see problems with turf disease and mushrooms.

How do dry conditions affect the amount of water I should use?

When we’re experiencing drought conditions, you may need to apply more water. Lawns require around one to two inches of water per week. Just make sure that the lawn is draining well and it’s not holding water at the surface.

Are there other factors that play into water retention in my yard?

Besides the amount of water that you’re applying to the lawn, the condition of the soil and how well it drains can definitely factor into water retention. If your lawn is really holding onto water, it could be that the soil is compacted.

Choosing Lawn Care in Southern NH, Northeastern MA, and Southern ME

Caring for your lawn can be complicated but taking the right steps can result in many benefits. Watering is just one of numerous factors. You’ll also need proper fertilization, weed control, and even disease and pest control.

With everything involved, we recommend partnering with a pro!

While a lawn care pro isn’t going to handle watering for you, they will be able to provide expert advice that will set you up for success. They’ll be able to answer any questions that you have and even help you identify problems that might be going on. One of the greatest benefits of having a lawn care professional on your property regularly is that they’ll be keeping an eye out for issues.

If you’re looking for a lawn care provider, we’d love for you to consider Seacoast Turf Care.

At Seacoast Turf, we’re not only looking to deliver the lawn care results you’re after, we’re looking to help make life less stressful for you. We provide lawn services in the seacoast region of New Hampshire, Maine, and Northeastern Massachusetts and we take great pride in partnering with homeowners to help them have the healthiest lawns possible.

Want to learn more about what makes us a great choice for your lawn care needs? At Seacoast Turf Care, we service NH towns near Stratham, North Hampton, Exeter and many more. Get lawn care pricing for your Southern NH, Southern Maine, or Northeastern Massachusetts property.  

Image Sources: wet grass, rain gauge, sprinkler