Jules Ginenthal, Natural Areas Stewardship coordinator at Cornell Botanical Gardens, plants a grafted lingering ash tree ...

Cornell is at the forefront of determining how "invisibility cloaks" and walls of protection may give ash trees hope of revival.

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 ...

BRAINERD — Guidelines are now in place to deal with the injection and removal of ash trees infested with emerald ash borer in Brainerd. City Council members approved the final reading of a tree ...

This non-native beetle kills ash trees by feeding on the layer beneath the bark, cutting off water and nutrients. Approximately one-third of the trees in Fort Collins are ash trees, making the city's ...

Purdue Landscape Report: Recently, there has been an uptick in questions related to one of Indiana’s most notorious invasive pests: the emerald ash borer. Homeowners, businesses, even professionals ...

Dominic Maze, a City of Portland biologist, discovered on June 30 that Oregon is facing an impending ecological disaster. Sitting on his truck tailgate and waiting for his kids to finish a day of ...

… but our independent journalism isn’t free to produce. Help us keep it this way with a tax-deductible donation today. In 2009, an invasive tree pest was discovered on an ash tree in St. Paul. This ...

Ash trees in the UK are rapidly evolving resistance in response to ash dieback disease, DNA sequencing of hundreds of trees has shown. The finding is good news, says Richard Buggs at the Royal Botanic ...