Aspen Trunk Rot

What is it?

Aspen trunk rot is a wood decaying fungus happens on aspen exclusively.

Symptom

  • Several hard, hoof-shaped fruiting bodies, with blackish, rough and cracked upper surface attached on tree trunk. The underside is brown in colour.

Damages

  • Rot the tree trunk within 4-6 years and cause a significant amount of wood decay.
  • No external indicators of showing how much decay of the wood, potential risk often easily neglected.
  • High risk of tree failure.

What to do?

  • Regular monitor and check your aspen tree to identify any fruiting bodies and potential diseases.
  • Remove hazard tree to prevent damage.
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Other resource:

https://tidcf.nrcan.gc.ca/en/diseases-caused-by-pathogens/factsheet/1000008