If these hardier trees can be bred with northern ash tree populations and have their genes introduced in those areas, the ...

Environmental groups in northern Ontario are working to preserve black ash trees from the emerald ash borer, an invasive beetle threatening to wipe out the species. The Invasive Species Centre in ...

eventually blocking the tree's water supply, causing it to die. While it does not cause much damage on its native hosts of the Manchurian ash and the Chinese ash, its introduction to Europe about ...