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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Willow > Bark chewed, removed or missing

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Willow > Trunk/Branches > Bark chewed, removed or missing

1 of 4
  • Sapwood rot 1
  • Sapwood rot 2
  • Sapwood rot 3

Sapwood rot
Schizophyllum commune, Cerenna unicolor, Trametes versicolor

  • Dead branches within the canopy
  • Yellowing to brown leaves may be present
  • Groups or rows of small (
  • Schizophyllum shelf fungi are white and appear fuzzy on top
  • Cerrena fungi are white to greenish grey and have concentric rings on the surface
  • Trametes shelf fungi are tan to brown with darker rings
  • Wood below fungal shelves is yellowish to white, spongy, crumbly and decayed
  • Bark around fungal shelves is killed and often falls off
  • Common on trees stressed by drought, winter injury, wounds, mechanical injury or other factors
  • More information on Sapwood rot...
2 of 4
  • Deer feeding/antler rubbing 1
  • Deer feeding/antler rubbing 2
  • Deer feeding/antler rubbing 3

Deer feeding/antler rubbing

  • Long lines of shredded or peeled off bark along main trunk up to 3 feet off the ground from antler rubbing; wood may appear shiny or "polished"
  • Leaves and small branches (
  • Feeding occurs from the ground up to 6 feet or slightly higher; ragged edges, same as above; if the bark is removed by a deer there will be no teeth marks
  • More information on Deer feeding/antler rubbing...
3 of 4
  • Rabbit feeding 1
  • Rabbit feeding 2
  • Rabbit feeding 3

Rabbit feeding

  • Bark is completely removed from the main trunk, only young trees are damaged
  • Regular scraping the size of a spoon tip can be seen in the wood
  • Damage can occur from ground level to several feet up the trunk depending on the depth of winter snow
  • Small twigs are cleanly cut off with a sharp edge, at a 45 degree angle
  • Majority of damage occurs in winter and early spring
  • Rabbit droppings (small, round pellets) often found near damaged tree
  • More information on Rabbit feeding...
4 of 4
  • Vole feeding 1
  • Vole feeding 2
  • Vole feeding 3

Vole feeding
Microtus spp. and Phenacomys spp.

  • On young trees, bark is completely removed from the main trunk in irregular patches
  • Scraping the size of fork tines can be seen in exposed wood
  • Damage occurs during winter from the ground level up to winter snow depth
  • Trees and shrubs appear to "die suddenly" during the growing season, especially if they experience any drought stress
  • More information on Vole feeding...

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