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June 3, 2026
New Study Tracks Long-Term Results of Forest Fungi Restoration Experiment
Few places are as intensively landscaped as golf courses. They’re mowed and manicured, they’re fertilized and kept chemically weed-free, and they’re tromped on half the year by golfers, carts, and...
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September 8, 2025
Ongoing HF&G Study Tests a Novel Way to Give Urban Tree Plantings a Boost
Planting trees in cities can bring a host of benefits. They pull pollutants and carbon dioxide out of the air, cool neighborhoods, reduce stormwater runoff, and make streets more inviting...
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April 28, 2025
Study Shows Forest Soils Still Bear the Scars of Industrial Pollution
KIRTLAND, OHIO — After 12 years of carefully tracking tree growth and soil chemistry, researchers at Holden Forests & Gardens (HF&G) have confirmed that phosphorus is now a limiting nutrient...
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December 5, 2024
The Incredible Life Beneath Our Feet
World Soil Day is held annually on December 5th as a way to foster awareness for soil conservation. This year’s theme for World Soil Day is “Caring for Soils: Measure,...
Read moreMycology See all
The study of fungi
December 5, 2024
The Incredible Life Beneath Our Feet
World Soil Day is held annually on December 5th as a way to foster awareness for soil conservation. This year’s theme for World Soil Day is “Caring for Soils: Measure,...
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September 13, 2024
Edible Mushrooms and Their Poisonous Look-alikes
If you are new to identifying mushrooms, I recommend that you read my earlier article, How to identify mushrooms and other fungi, for context and terminology before reading on. Mushroom...
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September 6, 2024
Common Lawn Mushrooms and What To Do About Them
As a scientist at HF&G, I often hear questions like, “How can I get rid of mushrooms in my yard?” or “Is it safe to have mushrooms in my lawn?”....
Read moreSoil ecology See all
The interactions between organisms in soil
June 3, 2026
New Study Tracks Long-Term Results of Forest Fungi Restoration Experiment
Few places are as intensively landscaped as golf courses. They’re mowed and manicured, they’re fertilized and kept chemically weed-free, and they’re tromped on half the year by golfers, carts, and...
Read more
December 5, 2024
The Incredible Life Beneath Our Feet
World Soil Day is held annually on December 5th as a way to foster awareness for soil conservation. This year’s theme for World Soil Day is “Caring for Soils: Measure,...
Read more
January 23, 2024
Can inoculated soils promote healthy urban trees? Preliminary results
Preliminary results from a Holden research project testing soil inoculations for improvement of urban tree plantings.
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