Portland State study finds trees and "green islands" in 2020 Oregon fire zones continued dying long after crews extinguished ...

This year, tree health specialists expected to see some mortality in Oregon following the state's recent droughts, but many were still shocked by the sheer number of trees that fell ill.

There is surely no shortage of Christmas trees in Oregon. Oregon is the largest producer of Christmas trees in the United States, harvesting around 4 million trees annually, according to World ...

The outline of the giant fungus ... associate professor of integratedforest protection at Oregon State University and an expert inArmillaria. Dead Trees Reveal Fungus Until now, the largest ...

And today, I think it’s much more relevant to us as we sit in this room today,” said Jim Gersbach, an Oregon Community Trees board member and spokesman for the state forestry department.

Drought-stricken Oregon saw a historic die-off of fir trees in 2022 that left hillsides once lush with green conifers dotted with patches of red, dead trees. The damage to fir trees was so ...

It has now traveled to 37 states, and killed over 100 million ash trees in the US and Canada. “The emerald ash borer will kill every standing ash tree in Oregon eventually,” Ragozzino told FOX 12.

Before the Willamette Valley was dominated by agriculture, it was dominated by savannahs of madrone, ponderosa pine and Oregon white oak. The trees still play an important role in the valley.

Drought-stricken Oregon saw a historic die-off of fir trees in 2022 that left hillsides dotted with patches of red, dead trees. Evergreen conifers are less able to survive in drought conditions ...

Drought, insect pests, and tree diseases continue to be the biggest threats to the Oregon’s trees. A new report on the state ...