Bark beetles moving between trees routinely carry two fungi that are responsible for the Dutch elm tree disease outbreak.

Bark beetles can destroy spruce forests by converting the trees' defences into even more toxic substances, scientists ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

Bark beetle damage has more than doubled for two consecutive years as warmer winters extend the insects' active season across ...

Fungi may help some tree-killer beetles turn a tree’s natural defense system against itself. This fungi-made perfume might explain why bark beetles tend to swarm the same tree. As climate change makes ...

Last week felt like I should have been working in the garden, flying a kite, or wade fishing for crappie. Other than the two ...

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 ...

The southern pine beetle (SPB) (Dendroctonus frontalis) and black turpentine beetle (BTB) (Dendroctonus terebrans) are serious pests of pines in Florida’s natural, cultivated, and landscape areas.

ISLAND PARK, Idaho – Oblivious to the dry summer heat, Forest Service silviculturist John Councilman hikes through a stand of trees looking for signs of violent struggle. It doesn’t take long.

In the Thuringian Forest or the Harz Mountains, dead spruce trees (Picea abies) dot the landscape like skeletons. Many have already fallen or been cut down. These dead trees serve as memorials to the ...