Balsam woolly adelgid threatens native fir trees and the state’s Christmas tree industry as it spreads to a fifth Michigan ...

The invasive pest attacks true fir trees, and persistent infestations weaken trees, kill branches and eventually lead to tree ...

(WSAW) - The Wisconsin Department of Natural Resources is asking landowners to be aware of an invasive species that has been detected in Michigan. Hemlock woolly adelgid target hemlock and fir trees.

As Oregon gets hotter and drier due to climate change, tree-killing invasive pests that prefer warmer temperatures are thriving — endangering Sitka spruce along the coast, firs in the mountains and ...

There’s concerns about an invasive insect targeting Michigan’s firs — including Christmas trees. That could have impacts on the state's forests and $45 million Christmas tree industry. Invasive pests ...