History and Distribution
Beech bark disease was first documented in Europe in 1849. At first, it was believed that the insect was the main cause of the disease. It wasn’t until 1914 that the fungus was associated with the disease. The first outbreak of beech bark disease in North America appeared in American Beech (Fagus grandifolia) in Nova Scotia around 1920. The disease then started to spread to the south and west. In 1929, the first case of beech bark disease was found in the United States in Massachusetts. By 2004, the disease had spread as far west as Michigan and as far south as western North Carolina.
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