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Health & Science6h 55m ago

A 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.

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Blue Mountains, Malheur National Forest, eastern Oregon

Who
Greg Whipple, Forest Service worker; researchers Ferguson, Dreisbach, Parks, Filip and Schmitt
What
A 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.
When
Sun, 14 Jun 2026 03:16:01 GMT · 6h 55m ago
Where
Blue Mountains, Malheur National Forest, eastern Oregon ·
Why
This fungus feeds by attacking the roots and lower trunks of trees.
The Frontline Impact

How this affects you

The honey fungus in Oregon is one of the largest living organisms on Earth by area, killing trees as it grows, and represents a significant and ancient biological entity in the forest ecosystem.

Story chain

10 events in this thread
  1. Health & Science6h 55m ago
    Beneath 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
  2. Health & Science6h 55m 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.
    Open article
  3. Health & Science6h 55m ago
    A 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
  4. Currently Reading6h 55m ago
    A 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.
  5. Health & Science6h 55m ago
    Beneath 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
  6. Health & Science6h 55m ago
    Beneath 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
  7. Health & Science6h 55m ago
    Beneath 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
  8. Health & Science6h 55m ago
    A 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
  9. Health & Science6h 55m ago
    A 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
  10. Health & Science6h 55m ago
    Beneath 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

Verified Sources & Citations