Mountain Pine Beetle
BSOA Special Projects » Tree Pests » Mountain Pine Beetle
The Mountain Pine Beetle affects lodgepole pines, limber pines, and whitebark pines. Look for sawdust around the base of the tree, red crown on tree or pitch tubes. Younger trees with a diameter of less than 5 inches are typically not attacked. Beetles will kill a tree in one year.
The number one pest affecting pine forests is the Mountain Pine Beetle. By the time you notice a problem with your pine trees, it's far too late to help. The first step is to identify "high-value trees" that you will work to save. Keep in mind that once you decide to save a few high-value trees, your efforts must continue for the duration of the pine beetle infestation, which could last for an additional 3 to 5 years. High-value trees could include a few larger pines near your home, trees that provide an important barrier between your home and a neighbor's home, or a tree of sentimental value.
What to do now: First, infected trees must be cut down and removed from your property. A consulting forester can help you determine what to remove and an arborist or forest crew can get the job done.
Protect high-value, healthy trees with annual pesticide applications which may include pheromone patches and spraying. Used improperly, insecticides can be injurious to humans, animals, and plants. We suggest you contact a trained applicator to conduct any biological or chemical treatment of pines. Remember, treatment is necessary as long as the beetle outbreak lasts.