From Iowa and eastern Missouri, it ranges east to West Virginia, western Virginia, Pennsylvania, and New Jersey. There are also aspen trees in the mountains of Mexico, as far south as Guanajuato.

Aspen trees are found mainly in Northeastern United States, the Lake States, northward into Canada, and in the Rockies from New Mexico north into Alberta. In fact, aspen is the most widespread ...

The Kebler Pass aspen stand covers the equivalent of just ... vulnerable prairie lands and mountainous grizzly habitat. New Mexico’s Valle Vidal, too, prompted enormous public outcry following ...

Once the living aspen trees die, there may not be any new growth to take their place ... on the Sky Islands of the American Southwest and Mexico. The trees diversify forest species, serve ...