Ash dieback is a severe disease that has substantially threatened European ash populations, particularly Fraxinus excelsior. The disease is caused by the invasive ascomycete fungus Hymenoscyphus ...

We have been on a two-year treatment schedule to protect our ash trees from emerald ash borer and have been fortunate to keep nearly all the trees growing and healthy. Recently we heard that it was ...

The City of Grand Junction continues to care for the city’s ash trees along streets and in parks through trunk injection treatments. Around 1,150 large public ash trees are being cared for by the city ...

The invasive emerald ash borer, according to the U.S. Department of Agriculture, was first found in the United States in southeast Michigan in 2002. In the decades since, the wood-boring beetle has ...

Evie has an ash tree in her yard that she’s hoping to save from the emerald ash borer. Evie has an ash tree in her yard that she’s hoping to save from the emerald ash borer. A Certified Arborist from ...

… 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 ...

DENVER — It’s estimated that 1 out of every 5 trees on the Colorado Front Range is an ash tree, and that species is being threatened by a destructive beetle. The tree canopy shading the Denver metro ...

The insect threatens the health and survival of the black ash tree. In northern Wisconsin, April Stone is carrying on a centuries-old Ojibwe practice of basket making. She uses wood from the black ash ...