The American Chestnut Foundation, or TACF, is a nonprofit American organization dedicated to restoring the American chestnut tree to the woodlands of the Eastern United States. TACF was founded in 1983.
An estimated four billion American chestnut trees grew from Maine to Florida and from the East Coast west to the Ohio Valley until a blight introduced by imported Asian chestnuts killed billions of American chestnuts in the first half of the 20th century. The death of the trees was a tremendous loss to wildlife that depended on the American chestnut as a primary food source. It also negatively affected the chestnut lumber industry and the many people who depended on selling the nuts of the tree as livestock feed.
TACF crossbreeds the American chestnut tree with the blight-resistant Chinese species to produce a tree that is 15/16 American. The process takes decades.