Majestic oak trees have been capturing attention long before travelers on the Oregon Trail stopped their wagons and set up their new life. Indigenous people nurtured oaks for edible acorns, and ...

As Oregonians prepare for Christmas, researchers are looking into how they can keep the state’s Christmas tree industry alive for decades to come. Oregon grows more Christmas trees than any other ...

The Mediterranean oak borer, an invasive beetle known to transmit a sometimes fatal fungus to Oregon white oak trees, has been found in Marion and Polk counties. Summer trappings also showed that the ...

PORTLAND, Ore. (KOIN) — Older trees in an Eastern Oregon forest are perishing “at an alarming rate,” according to researchers. A new study led by James Johnston, an assistant research professor for ...

As Oregon gets hotter and drier due to climate change, tree-killing invasive pests that prefer warmer temperatures are thriving — endangering Sitka spruce along the coast, firs in the mountains and ...