Dutch Elm Disease
Ophiostoma novo-ulmi
Ophiostoma novo-ulmi
Cryphonectria parasitica
Sirococcus clavigignenti-juglandacearum
Adelges piceae
Candidatus Phytoplasma fraxini
Adelges tsugae
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Hemlock trees in southern Vermont have been threatened with hemlock woolly adelgid for several years. They have also been stressed by drought for two seasons. Recently another stressor has been added to the mix. Elongate hemlock scale (EHS) has been found in stands of hemlock in Windham County, occasionally in conjunction with hemlock woolly adelgid.
Cryptococcus fagisuga and Neonectria spp.