Description: English: Recognize spruce beetle attacked trees. Look for pitch tubes on the lower 15 ft. of spruce trees. Date: 1 June 2018. Source: https://twitter.com/AKForestService/status/1002596136207740929. Author: United States Forest Service.
Description: English: Recognize spruce beetle attacked trees. Look for pitch tubes on the lower 15 ft. of spruce trees. Date: 1 June 2018. Source: https://twitter.com/AKForestService/status/1002596136207740929. Author: United States Forest Service.