Planting evergreen trees as privacy screens often looks friendlier than a fence, is cheaper than a wall, and prettier than lattice. It may take longer to reach a size to fully do the job, but it will ...

CORVALLIS, Ore. (KTVZ) – Increases in mortality among Douglas firs in the Klamath Mountains are the result of multiple factors that have the iconic tree in a “decline spiral” in parts of the region, a ...

In 2008, scientist Bryan Black took core samples the diameter of a pencil from a forest near the north Oregon coast. Most of the trees were hemlocks and Douglas fir that had been undisturbed for about ...

Landscape and forest trees are experiencing widespread dieback this spring according to Glenn Ahrens, Oregon State University Extension Forester for Marion County. "Browning or dieback is usually ...

Scientists examined how growth rates in the trees changed over 91-year period. As warm, dry conditions continue in the future, fewer Douglas firs expected to grow Growth slowed across species’ range, ...

The so-called “European” strain of sudden oak death showed up in southwest Oregon a few years back. It was known to spread to fir trees in Europe, but that hadn’t been seen in the state. Related: A ...