Aspen trees are stunning landscape icons, but they face constant threats from pests and diseases that can weaken or kill them if ignored. From fungal culprits like Cytospora canker and Marssonina leaf ...

While bark beetles have been slowly infesting trees in Aspen, winter won’t offer any respite. Aspen is currently home to the Douglas-fir beetle, the spruce beetle, the mountain pine beetle, Ips ...