An insect-fungus is damaging thousands of black walnut trees not only in California and other western states, but has now spread to Pennsylvania, Tennessee and Virginia, according to a just-published ...

After finding a tree infected with Thousand Cankers disease in Plumstead Township, officials have quarantined wood from walnut trees in Bucks County. The nasty-sounding disease occurs when walnut twig ...

English walnut trees throughout Utah Valley have poor leaf-out and bare branches. Not all the branches that look dead are dead. Give the trees good care, remove branches that are truly dead, and give ...

A canker on an eastern black walnut tree. The beetle that carries the fungus causing thousand cankers disease is visible in the canker's upper left corner. (Colorado State University photo/Ned ...

Purdue Extension forester Lenny Farlee shares identifying characteristics of the black walnut tree, also known as the American black walnut or eastern black walnut, including pairs of leaflets running ...

The photo is of a sycamore tree at Red-tail’s McVey Memorial Forest. A walk in the woods this time of year is different. It’s quiet and monochromatic. Other than the crunch of your shoes on frozen ...