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The Morton Arboretum is growing Chinese ash species from collected wild seeds in China, here, island ash (Fraxinus insularis). As these trees grow, they will be evaluated for their resistance to the emerald ash borer. The arboretum ultimately hopes to develop a hybrid of the Chinese and North American ash with resistance strong enough to survive the beetles.

 

The people at the Morton Arboretum in Lisle, Ill. have long worked on a solution to the terrible ravages of the emerald ash borer (EAB) on North American ash trees. The EAB is responsible for an estimated 25 million ash tree deaths in North America. EAB has invaded the Illinois landscape, which has a population of 131 million ash trees. The borers have afflicted ash trees in Virginia, Maryland, Pennsylvania, West Virginia, Ohio, Wisconsin, and Missouri, hitting Michigan especially hard. The beetle shows no sign of backing off. (See ?EUR??,,????'?????<https://www.landscapearchitect.com/private/research/article.php?id=10264)

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