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Emerald Ash Borer Threatens Oregon's Trees | Portland News
Description
An invasive emerald ash borer, first spotted in Oregon in 2022, is now spreading rapidly across the state—confirmed in Beaverton, Salem, and more—with experts warning up to 99% of native Oregon ash trees could be lost. Cities are responding by treating high-value trees, planting replacements, and urging residents to spot early signs of infestation. With treatment costing hundreds per tree every few years, officials advise focusing on saving valuable trees while removing hazardous ones—especially near power lines—and replacing ash with safer alternatives.
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