Damage seen in ponderosa pines
July 23, 2020
What’s causing damage to ponderosa pine trees across eastern Wyoming? Along the eastern border, high levels of damage are visible, varying from partial yellowing of the needles to tree mortality.
According to a press release from State Forestry, the answer is not yet known, but the issue is being investigated with the assistance of the U.S. Forest Service and UW Extension.
At this time, two factors appear to explain some of the effects being seen. The first is winter damage caused by the drying out of needles and the fluctuation and timing of cold temperatures; the second is twig bark bee...