Healthy Tree Management = Douglas Fir Bark Beetle Management
/Effective, healthy tree management means effective management of the Douglas Fir Bark Beetle.
For the past many years, one of the biggest threats to the health of Columbia Valley forests has been the Douglas Fir Bark Beetle.
Bark beetles attack trees under strain, during periods of drought, for instance, and bore holes in the bark of the stressed trees. Where a healthy tree can fend off the attack by oozing pitch into the holes to force the beetle out, the drought-stressed tree cannot produce an adequate amount of pitch to fight off the little devils.
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