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 ...

In 2002 in Michigan, many ash (Fraxinus sp.) trees started to show obvious signs of decline, and after careful inspections, arborists and biologists soon discovered a pest unknown to the U.S. as the ...

Samples for the study were collected by researchers from Penn State, the Forest Service and other partners around the Oregon ash range, extending from California, Oregon and Washington into British ...

I was a boy when Dutch Elm Disease killed most of the stately American elms that shaded our streets. Spongy moth caterpillars stripped the foliage of our oaks, killing many of them. Hemlock woolly ...

The emerald ash borer (EAB), an invasive wood-boring beetle native to Asia, continues to cause substantial damage to ash trees across multiple landscapes. The loss of this keystone group of trees ...

Botanists in the UK have teamed up with game development company Team Cooper to design a social media game that uses real genetic data from the common ash tree, Fraxinus excelsior, and from the ...

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 ...