PORTLAND, Ore. (KOIN) – The dreaded emerald ash borer has made its way into Portland, and it poses a threat to every ash tree in the city. The invasive beetle from East Asia has already had a ...

There’s a tree killer on the loose in Oregon, and nobody knows how to stop it. An invasive green beetle called the emerald ash borer arrived in the Midwest from Asia, and it’s killed over 100 million ...

PORTLAND, Oregon — A family is suing the City of Portland for $4.7 million over a tree that fell onto their home after the city denied them a permit to remove the tree. The Douglas fir crashed onto ...

PORTLAND, Ore. — The number of tree-related emergencies Portland Parks & Recreations is dealing with due to the storm overnight climbed from 27 to 79 on Tuesday morning. PP&R’s Urban Forestry team has ...

Strong winds expected to sweep through the Portland area and much of northwestern Oregon on Christmas Eve could put stress on trees, increasing the risk of falling limbs and toppled trunks after weeks ...

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 ...

At the Trees & Utilities Conference, utility vegetation managers and urban forestry professionals come together to learn what ...

PORTLAND, Oregon — A family is suing the City of Portland for $4.7 million over a tree that fell onto their home after the city denied them a permit to remove the tree. The Douglas fir crashed onto ...