B.A. Blackwell and Associates Ltd. to continue work on $17.9-million project related to hemlock looper moth infestation.

Birch Creek Golf Course recently dealt with an infestation of Douglas-fir tussock moth larvae, which damaged several of the ...

Eastern Oregon's Malheur National Forest boasts some of the state's oldest trees, including pine and larch that live more ...

With a Christmas tree-grower’s eye honed over decades, Paul Alan Shealer examined a nearly eight-foot-tall Douglas fir Monday at Evergreen Acres Tree Farm. Under the morning sun, the tree’s bluish ...

PORTLAND, Ore. ( KOIN) — Older trees in an Eastern Oregon forest are perishing “at an alarming rate,” according to ...

A study finds a quarter of old trees in Oregon’s Malheur Forest died in 10 years, driven by drought, bugs, and overcrowding.

The state’s park department says they are experiencing an outbreak of Douglas-fir tussock moth caterpillars at Hyde Memorial ...

Have you ever looked at a mountain and wondered why there were trees on one side but none on the other? Or noticed different ...

We all know them, and love them, if exasperatedly—the Christmas in July celebrators. Amazon is cleverly churning out Prime ...

A recent study in the Malheur National Forest found old growth tress were dying off, primarily due to competition from ...

Johnston attributed the decline to a combination of drought, insect infestations, and competition with younger trees. "It's ...