After several days of rain, you may walk outside and suddenly find mushrooms scattered throughout your lawn. It is common for homeowners to worry that this means their lawn is unhealthy, diseased, or in need of a fungicide treatment.
In most cases, there is no reason to panic.
Mushrooms are common during wet weather and are generally harmless to your grass. In fact, they are often evidence of the natural activity happening beneath the soil.
Why Are Mushrooms Growing in My Lawn?
Mushrooms are the visible part of fungi living beneath the soil. They commonly appear when there is plenty of moisture and organic material for the fungi to break down.
In our experience, we see the most mushrooms following excessive rainfall. They also frequently appear where old tree roots, buried wood, or tree stumps are slowly decomposing underground.
This is why mushrooms may continue returning to the same lawn year after year. Even after a tree is gone, its root system can remain beneath the soil for a long time.
The mushrooms are not attacking the grass. They are helping break down organic material as part of the natural decomposition process.
Are Mushrooms a Sign of an Unhealthy Lawn?
Usually, no.
One of the biggest misunderstandings about lawn mushrooms is that they must be a sign of something negative. Their presence usually means the environment is moist and contains organic material that fungi can decompose.
We consider them part of a healthy, active ecosystem. Fungi play an important role in breaking down dead roots and other organic material so nutrients can return to the soil.
Homeowners may not be happy to see mushrooms growing across an otherwise clean lawn, but their appearance alone does not mean the lawn is unhealthy.
Do Mushrooms Cause Lawn Disease?
A physical mushroom growing from the soil is not, by itself, a symptom of lawn disease.
Mushrooms and certain turf diseases can appear under similar conditions. Extended moisture, humidity, and excessive watering can encourage both. However, this does not mean the mushrooms caused the disease.
When inspecting a lawn for an actual disease, we look for symptoms in the grass itself, including:
• Yellow or brown areas
• Consistent spots, circles, or patterns
• Thinning or damaged grass
• Symptoms that continue spreading
• Discoloration that cannot be explained by mowing, drought, or another obvious cause
Lawn disease symptoms may also appear in sunny areas, while mushrooms are often associated with moist soil, shade, decaying roots, or buried wood.
If you only see physical mushrooms and the surrounding grass looks healthy, you are probably looking at normal fungal activity rather than a turf disease.
Will a Fungicide Get Rid of Lawn Mushrooms?
No. A standard lawn fungicide application is not an effective solution for mushrooms growing from decaying organic material.
We have had homeowners request fungicide treatments specifically to eliminate mushrooms. We always explain that the treatment will not remove the underground food source or prevent mushrooms from returning after wet weather.
The visible mushroom is only a small part of a much larger fungal network beneath the surface. Treating the mushroom does not remove the decaying roots, wood, or stump supporting that network.
Applying an unnecessary fungicide would cost the homeowner money without correcting the actual cause.
How Can I Remove Mushrooms From My Lawn?
If you find them unattractive, you can clip them off near the base with scissors and place them in a plastic bag for disposal. Removing them before they mature may also reduce the number of spores released around the immediate area.
You can also mow them over, but clipping and bagging them is a better option when children or pets regularly use the lawn.
Removing the visible mushrooms does not eliminate the fungi below the soil, so new mushrooms may appear when conditions become wet again.
How Can I Make Mushrooms Appear Less Often?
You may not be able to stop them completely, especially during a period of heavy rainfall. However, a few changes may make the lawn less favorable for repeated mushroom growth.
Avoid overwatering
Do not add unnecessary irrigation when the soil is already wet. Constant moisture creates favorable conditions for mushrooms and can also increase the risk of actual lawn diseases.
Correct drainage problems when possible
Areas that remain wet long after rainfall may need drainage improvements. Addressing standing water can benefit both the lawn and the surrounding landscape.
Remove the full tree stump
When possible, have an unwanted stump and its remaining wood removed instead of only grinding down the visible portion.
Stump grinding often leaves wood and roots beneath the soil. As that material decomposes, it can continue supporting mushrooms for years. Full removal is more likely to reduce the underground food source, although removing every root is not always practical.
Be patient
Sometimes the most realistic solution is to allow the buried organic material to finish decomposing naturally. We see mushrooms return to the same properties year after year, particularly where trees were previously removed.
Most homeowners ask about them once. They may not love the answer, but they are usually reassured once they understand that the mushrooms are not harming their lawn.
Are Lawn Mushrooms Dangerous to Children or Pets?
Mushrooms are generally harmless to the grass, but that does not mean every wild mushroom is safe to eat.
Never consume a wild mushroom or allow children or pets to eat one unless it has been professionally identified as safe. It can be extremely difficult to distinguish harmless varieties from toxic ones based only on appearance.
If young children or curious pets use the lawn, remove and bag mushrooms as soon as you notice them. Contact a medical professional, veterinarian, or poison control resource immediately if you believe one has been eaten.
When Should I Call a Lawn Care Professional?
Consider requesting an inspection if you also notice:
• Yellowing or browning grass
• Repeating circles or consistent patterns
• Areas of turf that are thinning or dying
• Standing water or continuing drainage problems
• Symptoms that spread after the mushrooms disappear
• A problem you cannot confidently identify
A lawn care professional can help determine whether you are seeing normal mushrooms, an actual turf disease, or a separate environmental issue.
The Bottom Line
Mushrooms in your lawn are usually not something to fear. They are a beautiful piece of nature and an important part of the circle of life.
They help decompose old roots, buried wood, and other organic material beneath the soil. Their appearance after heavy rain does not automatically mean your lawn is diseased or unhealthy.
Avoid overwatering, remove them if they are unsightly, keep unidentified mushrooms away from children and pets, and watch the grass for true symptoms such as yellowing, browning, or consistent patterns.
Sometimes the healthiest response is not another treatment. It is simply understanding what nature is doing beneath your lawn.
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