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 ...

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

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

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

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 ...

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

A tiny beetle known for decimating ash trees throughout North America and Europe has been discovered for the first time in Portland and has spread to new sites in several other counties where the ...

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 ...