pine bark bettle

Asked October 11, 2018, 3:54 PM EDT

What is the recommended systemic treatment for central Oregon and what is the recommended spray

Deschutes County Oregon

1 Response

Hi there,

We have several different kinds of bark beetles that will attack live pine trees. Bark beetle are attached to stressed trees, so usually beetle attacks are a sign of something else going on: drought, root damage, excessive or inappropriate pruning, too many trees competing for space, light and water.

The most common bark beetles include:
Mountain Pine Beetle:
Western Pine Beetle:
and Red Turpentine Beetle:

The above links provide management guidance.

Once beetles attack a tree there is little you can do other than prevent spread of the infestation. Insecticides are only recommended as a preventative for high value trees, but are expensive and difficult to apply, and must be applied by a licensed professional arborist or forester.