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Managing for a Whole Forest: Pests, Diseases & Other Problems

We have broken down the causes of tree damage and/or mortality on the Tree Farm (other than old age) into four general categories. At this point we have listed these--in the future we may add more on the specific measures that we take to address each individual problem. Also note that, although we refer to these as problems, in moderate levels these "problems" are a part of a healthy forest. For example the brushy growth of Douglas Fir Dwarf Mistletoe provides nesting habitat for species such as the long eared owl and the flying squirrel.

Fungi & Parasites
  • Root rot (Armallaria, Anosis, Laminated)
  • Mistletoe (Doug Fir Dwarf Mistletoe, Larch Dwarf Mistletoe, Ponderosa Pine Dwarf Mistletoe)
  • Elytroderma Needle Blight (Pine)
Defoliators
  • Spruce Budworm (Spruce, Grand and Douglas Fir)
  • Larch Casebearer (Larch)
Bark Beetles & Wood Borers
  • Western Pine Beetle (Pine)
  • Mountain Pine Beetle (Pine)
  • Western Pine Shoot Borer
  • Ips (Pine)
  • Turpentine Beetle (Pine)
  • Douglas Fir Bark Beetle (Douglas Fir)
  • White Fir Engraver (white/grand fir)
  • Spruce Bark Beetle (spruce)
OTHER ACTS OF NATURE
  • Wind damage/blowdown
  • Snow/Ice damage (breaks tops from trees)
  • Forest Fire (we have not had one but it is a risk)
  • Deer and Elk (they eat  the tips of young trees and also use their horns to strip bark off of young trees)