Damage from deer and elk is common on Douglas-fir in the spring, and on Fraser, Turkish, and Nordmann fir in winter and spring.

Antler Rubbing (Photo by Chal Landgren, OSU).

Deer and Elk

Fencing off trees (Photo by Chal Landgren, OSU).

Signs & Symptoms

  • Antler Rubbing: occurs on trees with open internodal spaces. Often bark is scraped off, producing long-lasting injury.
  • Foliage Feeding: damage to leaders and upper branches, usually the current season foliage

Where to Look

  • Droppings and tracks around the base of trees aid in identification

Management Options

  • Fencing, repellents for individual tree protection.

Mice and Voles

Feeding marks (Photo by Michael Bondi, OSU).

Signs & Symptoms

  • Small feeding marks around the stem of seedlings
  • A decrease in tree growth from sublethal feeding injuries
  • Tree death, if smaller trees completely girdled

Where to Look

  • Stems of seedlings, just above ground level, especially during winter and early spring

Management Options

  • Maintain weed control in the rows, particularly around the base of the tree; bare ground exposes rodents to predators.