<p>Workers from R&R Tree Service remove a black walnut tree infected with thousand canker disease on the North Campus of the Oregon State Hospital in Salem, Oregon., on Monday. The company will be removing 14 infected trees.</p>
March 25, 2015
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March 25, 2015 9 p.m.
Oregon targets black walnut disease in Salem
SALEM, Ore. (AP) - Crews are cutting down 14 century-old black walnut trees at the Oregon State Hospital and are trying to save 38 more from an infestation that could threaten the species citywide.