06/01/2026
🪲 Spotting Fir Bark Beetles Before It’s Too Late
This mature Douglas-fir was recently assessed on a customer’s property after showing signs of decline.
One of the telltale signs of bark beetle activity is the presence of orange-brown boring dust (frass) collecting in bark crevices and around the base of the tree. This tree was recently attacked and that’s what you’re seeing in this photo.
While bark beetles are a natural part of our forests, they often target trees that are stressed by drought, root damage, overcrowding, construction impacts, or age-related decline.
🔍 Watch for:
• Orange or reddish boring dust on the bark or ground below
• Pitch tubes (small globs of resin)
• Thinning or fading foliage
• Woodpecker activity
• Sections of the crown turning yellow or red
Once a tree is successfully attacked and colonized by bark beetles, recovery is unlikely. Early identification is important because prompt removal and disposal of infested trees can help reduce the risk of beetles spreading to nearby susceptible fir trees.
The sooner a problem is identified, the more options are available to protect surrounding trees and reduce future hazards.
If you have mature fir trees on your property and aren’t sure what you’re looking at, our ISA Certified Arborists can help.
📍 Serving Golden, Invermere, Kimberley, Cranbrook, and surrounding communities since 2007.
