David Winston, RH (AHG) teaches classes in herbal medicine throughout the United States, Canada and Europe.  Below is a partial list of topics along with descriptions.  Please feel free to contact us for information regarding fees and/or date availability.

American Extra Pharmacopoeia

Many popular native species are endangered or threatened by over-harvesting.  Many aggressive weedy species of plants are invasive and damage the environment.  In this class we will learn to use little known over abundant weed species for medicine.  Get good medicines, help the environment, and take pressure off over-utilized native plants.