The Douglas-fir beetle has been found in Cordillera and has already stricken several old-growth trees at the Trailhead.
Douglas-fir beetles produce one new generation each year with some larvae and adult beetles overwintering in the bark of infested trees. They attack trees in April through June and sometimes into August.
The infestation cycle for the burrowing insect is complete for the 2017 summer. The Healthy Forest Project Manager Bill Wentworth will be surveying properties this fall and will have a program initiated by spring before the next generation of beetles fly to infest other trees.
Indication of an infested tree include:
•Small groups of dead and dying Douglas-Fir trees.
•Needles fading from green to red-brown before dropping.
•The presence of reddish-brown boring dust around the base of trees and within the cracks and crevices of the bark.
•Streaming resin along the trunk.
•Wood pecker damage.
To report an infested tree, contact Bill Wentworth, healthy forest project manager at 970-569-6250. Additional information on the Douglas-fir beetle can be found on the website at www.Cordilleraliving.com/DocumentCenter.