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 ...
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 ...
An Iowa big tree hunter takes measurements of the an Atlantic white cedar tree on the grounds at Brucemore in southeast Cedar Rapids, Iowa, on Wednesday, March 16, 2022. (Jim Slosiarek/The Gazette) ...
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