Mountain Pine Beetle Preventative Spraying

Asked April 7, 2016, 2:39 PM EDT


I live in Palmer Lake, near the border of El Paso and Douglas Counties. I have a number of fairly large pine-trees in my residential yard. For the past few years I have had the trees sprayed as a preventative for Mountain Pine Beetle, even though I have never seen any pine beetle damage in the area. I believe the company has used Bifenthrin.

I am curious if you recommend continued spraying. I am concerned about the environmental impact of repeated spraying with insecticides, especially in a residential area, and of the impact it has on bees, birds, etc.

Thank you very much for your time and help.

El Paso County Colorado trees and shrubs

1 Response

Thank you for your question. CSU does provide information on preventative spraying for Mountain Pine Beetle - the link is: I am also providing a link to information on Bifenthrin - . This Fact Sheet discusses the toxicity of the product.
I applaud your efforts to keep your trees healthy and protect the environment.