It feeds on the cells lining the pine’s resin canals, causing resin to leak into other vessels that carry water around the tree. Cut off from their water supply, the pine’s needles turn yellow ...

A late-March ice storm that left a 12-county area of northern Michigan a disaster area has left thousands of broken, damaged and fallen trees. And that is a vector for pests and disease. DNR ...

PWN is transported to host pine trees by its insect vector, the Monochamus beetle, during the summer 3. Inside the pine tree, the nematode develops rapidly through four larval stages ...

The whitebark pine is a hardy tree that grows in an area stretching from British Columbia, Canada south to parts of California and east to Montana. It's a keystone species in its subalpine and ...