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fungi

Understanding Garden Mushrooms and How They Benefit Your Plants

Most garden mushrooms are temporary fruiting bodies of fungi that help decompose organic matter or partner with roots. Learn why they appear, whether to remove them, and how to handle them safely.

By Bettesworth Construction Team 3 min read
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Garden mushrooms are usually temporary fruiting bodies of fungi living in soil or decaying material. Many fungi help recycle nutrients, and some form beneficial partnerships with plant roots; most mushrooms appearing in lawns and garden beds do not harm nearby plants. A mushroom alone, however, does not show which role a fungus is playing.

What a garden mushroom tells you—and what it does not

The visible mushroom is a reproductive structure, not the whole fungus. Most of the organism is hidden underground or inside material such as a buried root, stump, or mulch. The mushroom releases spores, while the rest of the fungus can remain after the visible structure disappears. Maryland Extension explains the difference between mushrooms and the fungi that produce them.

Seeing a mushroom does not, by itself, mean a nearby plant is thriving or sick. Fungi include decomposers, root partners, and plant parasites; identifying the role requires more than noticing a fruiting body. Most ordinary lawn and garden mushrooms are not damaging nearby plants, according to Iowa State Extension.

How fungi can benefit plants

Decomposers return nutrients to the soil

Many fungi feed on dead leaves, roots, wood, and other organic material. As they break that material down, nutrients are released and recycled in the soil, where they may become available to plants. UC Integrated Pest Management describes most lawn fungi as beneficial decomposers; Maryland Extension likewise notes fungi’s role in nutrient recycling.

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Mycorrhizae partner with plant roots

Some fungi live on or within roots in a mutually beneficial association called mycorrhizae. The fungus and plant both benefit from this partnership. Maryland Extension notes these associations occur with many plants, including turfgrass, perennials, shrubs, and trees. Not every mushroom is evidence of mycorrhizae: a fruiting body may instead be connected to decaying wood or roots, and some fungi can parasitize plants.

Why mushrooms appear in lawns and garden beds

Mushrooms often emerge when conditions are favorable, especially during cool, damp weather. In beds, they may be associated with decaying roots, buried stumps, mulch, or other organic matter. Fruiting can be brief, even though the fungus remains in the soil or material. Maryland Extension’s lawn-mushroom guidance discusses these common conditions.

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How to get rid of mushrooms in your yard or garden bed

If mushrooms are not a nuisance and there is no risk that someone will eat them, leaving them alone is reasonable. Iowa State Extension says most cause no damage to grass, soil, or nearby plants, so treatment is generally unnecessary.

For appearance or to reduce the chance that a child or pet will try to eat them, gather the visible mushrooms by hand, rake them away, or mow them off. This removes the fruiting bodies, not the fungus beneath the surface, so mushrooms can return when conditions favor fruiting. Maryland Extension says there is no practical, permanent way to eliminate ordinary lawn mushrooms; applying fungicide is not a dependable fix. The same distinction is captured by Kansas State University horticulture expert Matt McKernan: “A fungicide spray to the mushroom itself does little good. Remember the mushroom is simply the fruiting structure of the organism. Most of the fungus is below ground and inaccessible to the chemical. The above-ground mushroom only produces and spreads fungal spores.” K-State Extension published this guidance on June 30, 2026.

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Safety: do not eat an unidentified mushroom

Never assume a mushroom growing in a lawn or garden is edible. Appearance alone is not a safe way to identify a species, and a photo or app should not be treated as proof that a mushroom is safe to eat. If a child or pet may try one, remove and dispose of the visible mushrooms; Maryland Extension advises this precaution.

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When a mushroom is not the whole problem

This general guidance is for ordinary nuisance mushrooms, not diagnosis of a particular fungus or plant disease. A distinct symptom such as a fairy ring or visibly declining plants deserves local assessment. The presence of a mushroom alone cannot establish what is affecting a specific plant.

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  • GROW YOUR PLANT ALL YEAR-ROUND: This organic mushroom indoor kit allows you to grow your own crop all-year round; Just place the box near a window with indirect light, mist twice a day, and you'll see delicious, beautiful mushrooms growing within a week; Included in this kit is an organic plant-based soil infused with mushroom spawn and a booklet with instructions
  • CONVENIENT AND EASY: Mushrooms are one of the easiest to grow indoors; All you need to do is open, spray daily with the included mister, and in 10 days you'll be harvesting your own mushrooms right out of the box; Each crop produces three to four servings of mushrooms, and each box can grow up two crops
  • THE PERFECT GIFT: The perfect holiday gift, it comes in a beautiful packaging so that it's ready to be given to foodie, garden-loving and eco-conscious friends and family; This kit is also part of our Grow One Give One campaign, simpy share a picture on social media, tag us and use the campaign hashtag, and we'll donate a kit to a classroom of your choice
  • GUARANTEED TO GROW: Made in the USA and 100% Guaranteed to grow. If you are not satisfied, simply message us and we will send you a Back To The Roots replacement

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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