09/12/2026
For millennia, chestnut trees were one of the key species in Shenandoah's dense climax forest. Some estimates claim that chestnuts made up 70% of all trees in Shenandoah. Around the turn of the century, however, this pattern started to change.
Cryphonectria parasitica, a parasitic fungus, naturally occurs in East Asian chestnut populations. These trees have co-evolved with the fungus, so they nearly resist its effects. Unfortunately, this relationship allows them to serve as excellent hosts. Just a few years after Japanese chestnuts arrived in the United States in the late 1800s, the chestnut blight started appearing in American chestnuts. Over the next four decades, the chestnut blight virtually wiped-out American chestnuts.
Shenandoah once featured many mature chestnuts. By the time the park opened in 1936, these trees had died or were dying. The high number of dead chestnuts created a distinctive "ghost forest": dense stands of dead white chestnut trees. Franklin D. Roosevelt commented on them during his visit to Rapidan Camp in 1933. Mountain residents, especially those who had long relied on chestnuts as a source of both food and income, certainly felt the loss.
During the park's landscape design phase, the CCC replanted our forests. They chose other native species such as oak, birch, and ash, which continue to dominate today. The fallen chestnuts provided building material. Early park crews used old chestnut wood to construct many park buildings, including Dickey Ridge Visitor Center and Big Meadows Lodge.
To learn more about how the park landscape has changed over time, see https://www.nps.gov/articles/000/abused_landscape.htm
NPS Photo