How to Get Rid of Pesky Mushrooms in Your Lawn
Mushrooms popping up in your lawn can be unsightly and frustrating. Here’s how to get rid of them for good.
Identify the Type of Mushrooms
The first step is to identify the type of mushrooms in your lawn. There are thousands of mushroom species, but the most common lawn mushrooms are:
Fairy ring mushrooms – these grow in circular rings and are generally considered harmless. The ring pattern is caused by the outward growth of mycelium under the soil.
Inky cap mushrooms – these mushrooms start out light-colored but quickly turn black and liquefy. They indicate rich organic matter in the soil.
Puffball mushrooms – these round mushrooms release spores when compressed. They enjoy shady, damp areas.
Knowing the type of mushrooms can help you pinpoint the cause and treatment. Take pictures and research online or consult an expert to accurately identify them.
Evaluate Your Lawn Care
Mushrooms indicate moist, acidic, thatch-filled turf. Evaluate your lawn care to identify conditions promoting fungi:
Overwatering – excessive moisture encourages mushrooms. Allow the lawn to dry between waterings.
Dense shade – improve sunlight penetration by pruning overhanging trees/shrubs.
Thatch buildup – remove thatch layers with aeration or dethatching.
Low soil pH – raise pH with lime treatments to make the lawn less hospitable to mushrooms.
Adjusting these lawn care practices can make the environment less favorable for mushroom growth.
Use a Moss Control Product
Moss control products containing ferrous sulfate or iron sulfate will help kill mushrooms and discourage regrowth. These ingredients acidify the soil while providing iron that is toxic to fungi.
Follow product instructions for proper dilution and application. Apply evenly across the entire lawn, especially targeting mushroom patches. Reapply as label directs until mushrooms dissipate.
Rake or Mow Over Mushrooms
Physically removing mushrooms by raking or mowing them will provide immediate relief. Rake vigorously with a stiff broom or metal rake to dislodge mushrooms from the soil.
Set the mower blades low and mow over mushrooms. This severs them at the base to prevent further expansion. Be sure to collect and discard mushroom pieces after mowing to prevent regrowth.
Apply a Fungicide
For severe or recurring lawn mushroom problems, fungicide application may be necessary. Chlorothalonil and myclobutanil are two fungicides labeled for mushroom control in lawns.
Carefully follow label directions for timing, mixing, and application. Wear protective equipment when handling fungicides. Results are gradual but can provide long-term suppression when applied correctly.
Encourage Air Circulation
Promoting air flow across the lawn can create an environment less favorable to fungi. Remove any excess shade from trees, shrubs or structures. Prune dense groundcover plants that restrict airflow near soil level.
Aeration helps circulate air and dry out the soil through punctured holes. Dethatching also opens up the lawn base to encourage drying.
Good air circulation reduces humidity and moisture – two key factors mushrooms need to thrive.
By identifying the mushrooms, adjusting lawn care, using control products, and improving airflow, you can successfully rid your lawn of pesky mushrooms. Be patient, as it may take time to correct the underlying conditions. But staying diligent will provide lasting results and a mushroom-free lawn.