Folks back in the 1800s (and even into the 1900s in some parts!) did not have a local grocery store with fruits and vegetables piled onto cooled shelves, or a corner drug store where remedies waited patiently stacked. Most of their nourishment and medicines came from the world around them, from spring greens and summer flowers, to autumn fruits and roots dug in winter.
The mountains are literally covered with herbs, plants and other naturally occurring substances which can be eaten or used for medicinal purposes. Extreme caution should be used, however, when dabbling in natural remedies and wild foods! If even remotely unsure of what you're using or ingesting, DON'T DO IT! It is important to learn to properly identify a plant before using it for food or medicine. Mistakes can be painful, or even deadly.
Go to the website to read about specific plants.