-- American Chestnut - Northern Research Station, USDA Forest Service

American Chestnut

Chestnut Blight

[photo:] American chestnut infected with the chestnut blight fungusChestnut blight is a disease, caused by the non-native fungus Cryphoectria parasitica, which has killed most mature American chestnuts (Castanea dentata) throughout the tree’s range. The fungus was likely imported from Japan in the late 1800s and was first identified in the U.S. in 1904. The fungus attacks the vascular cambium of the chestnut, the tissue that moves water, nutrients, and carbohydrates throughout the tree. The fungal spores are spread tree to tree by wind, insects, and birds.  Other trees that are highly susceptible to chestnut blight include Allegheny chinquapin (C. pumila), Ozark chinquapin (C. ozarkensis); both native to the U.S., and European chestnut (C. sativa).  


Last Modified: March 19, 2019