Tree Growth Regulators, commonly known as TGRs, have been around for decades and are well known in the utility vegetation management (UVM) industry. However, they tend to be viewed as a limited use ...

Most of the world’s tree species have a close relationship with the fungi, known as ectomycorrhizae, that grow on their roots. These form a dense network around the fine roots, supplying the trees ...

TONGASS NATIONAL FOREST, Alaska — The Sitka spruce soaring more than 180 feet skyward has stood on this spot on Prince of Wales Island for centuries. While fierce winds have contorted the towering ...