Tracking a new forest pathogen killing beech trees

Tracking a new forest pathogen killing beech trees

Near the bottom of a shady hillside in Jericho, a lone beech tree stretches high into the canopy, a relic of a bygone forest. Through luck or (hopefully) genetics, this mighty tree has avoided contracting beech bark disease—a fatal fungal pathogen that has proven deadly to mature beech trees. And it stands just outside a hotspot where a new pathogen called beech leaf disease (BLD) is spreading across Vermont forests.