The city is hoping to start with planting over 6,000 trees in neighborhoods that lack shade, then upping the number to 10,000 ...

The emerald ash borer has made its way to Portland, posing a threat to 100,000 ash trees in the city, and the Oregon ...

Portland’s tree canopy will not look the same over the next decade. For many residents, the first signs of the emerald ash ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many native ash trees that cool ...

Just outside Cottage Grove at the U.S. Department of Agriculture’s Dorena Research Center, scientists are playing a numbers ...

If you’re reading this, you probably know the value of the Mercury’s news reporting, arts and culture coverage, event ...

According to Urban Forestry, current code requires property owners to plant a 1.5-inch caliper broadleaf tree or 5-foot-tall ...

The city of Portland is launching a major expansion of its citywide tree planting and tree care efforts, including restarting its relationship with the well-known nonprofit Friends of Trees. The ...

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 ...

Emerald ash borer, an invasive beetle that kills ash trees, was detected in Portland this summer, resulting in a quarantine ...

PORTLAND, Ore. (KGW/KTVZ) — Thousands of people remained without power Tuesday morning in western Oregon, including the Portland metro area, after heavy wind and rain storm whipped across the region ...

Over the summer, a private arborist noticed an ailing green ash tree at the David Douglas Aquatics Center near Hazelwood-Mill ...