Some trees and shrubs have a bad reputation for being susceptible to diseases: lilacs to powdery mildew, junipers to juniper tip blight, flowering crabapples to apple scab, and elms to Dutch elm ...
Aleta McKeage speaks about a shagbark hickory tree last month as she leads a tour of the City Park Arboretum in Belfast. Scientists are trying to find species that can survive in Maine as temperatures ...
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