|To give you an idea of how fast this blight was able to produce such devastation, look at this timeline:
In 1904, a non-native species of fungus was first identified. It probably arrived on imported Asian chestnut trees as much as 10 years earlier. The American chestnut trees in the New York Zoological Park began dying.
By 1910, the trees across Pennsylvania were dying, and the blight was moving south at a rate of 50 miles a year. Every attempt to stop it, including quarantines, failed.
By 1912, ALL the American chestnut trees in New York City were dead.
By 1913, the blight entered North Carolina.
By 1950, the American chestnut had ceased to exist as an ecological factor in the eastern Appalachian forest.
In the late 1800s and early 1900s Asian chestnuts were shipped to the United States. Many contained a deadly fungus.