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Health & Science6h 48m ago
A single honey fungus, Armillaria ostoyae, in Oregon's Malheur National Forest has been spreading through the roots of the forest for thousands of years and now covers nearly 10 square kilometers.
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Malheur National Forest, Blue Mountains, eastern Oregon, United States
Who
Forest Service worker Greg Whipple, researchers Ferguson, Dreisbach, Parks, Filip and Schmitt
What
A single honey fungus, Armillaria ostoyae, in Oregon's Malheur National Forest has been spreading through the roots of the forest for thousands of years and now covers nearly 10 square kilometers.
When
Sun, 14 Jun 2026 03:16:01 GMT · 6h 48m ago
Where
Malheur National Forest, Blue Mountains, eastern Oregon, United States ·
Why
The fungus is a root pathogen that feeds by attacking the roots and lower trunks of trees.
The Frontline Impact
How this affects you
This massive fungus, one of the strongest contenders for the largest living organism by area on Earth, continues to kill trees as it spreads, demonstrating a unique form of biological persistence underground.
Story chain
10 events in this thread- Health & Science6h 48m agoBeneath the Blue Mountains of eastern Oregon, in the Malheur National Forest, a single honey fungus has been spreading through the roots of the forest for thousands of years, now covering nearly ten square kilometres.Open article
- Currently Reading6h 48m agoA single honey fungus, Armillaria ostoyae, in Oregon's Malheur National Forest has been spreading through the roots of the forest for thousands of years and now covers nearly 10 square kilometers.
- Health & Science6h 48m agoA single honey fungus, Armillaria ostoyae, in the Malheur National Forest has been spreading through the roots of the forest for thousands of years and now covers nearly ten square kilometres.Open article
- Health & Science6h 48m agoA single honey fungus, Armillaria ostoyae, has been spreading through the roots of the forest in the Malheur National Forest, eastern Oregon, for thousands of years, now covering nearly ten square kilometres.Open article
- Health & Science6h 48m agoBeneath the Blue Mountains of eastern Oregon, a single honey fungus has been spreading through the roots of the forest for thousands of years, now covering nearly 10 square kilometres.Open article
- Health & Science6h 48m agoBeneath the Blue Mountains of eastern Oregon, in the Malheur National Forest, a single honey fungus has been spreading through the roots of the forest for thousands of years, now covering nearly ten square kilometres.Open article
- Health & Science6h 48m agoBeneath the Blue Mountains of eastern Oregon, a single honey fungus has been spreading through the roots of the forest for thousands of years, now covering nearly 10 square kilometres.Open article
- Health & Science6h 48m agoA single honey fungus, Armillaria ostoyae, in the Malheur National Forest, has been spreading for thousands of years and now covers nearly 10 square kilometres.Open article
- Health & Science6h 48m agoA single honey fungus, Armillaria ostoyae, covering nearly ten square kilometres, has been spreading through the roots of the forest in Oregon’s Blue Mountains for thousands of years.Open article
- Health & Science6h 48m agoBeneath the Blue Mountains of eastern Oregon, in the Malheur National Forest, a single honey fungus has been spreading through the roots of the forest for thousands of years, now covering nearly ten square kilometres.Open article