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

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

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

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

Valerie Nagle, whose DNA recently helped to confirm the remains of her sister Marion Vinetta Nagle McWhorter, who disappeared ...

The City of Portland is getting a massive expansion to its tree planting program. They are planning to more than double the number of trees they plant every year, making it the largest expansion in ...

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

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

It’s official. The emerald ash borer, a half-inch-long metallic-green beetle, has arrived in Portland. Portland Parks and ...

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

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

A tiny green beetle that can have a devasting impact on ash trees has been found in new sites in northwest Oregon, according ...