Ashwagandha powder, also known as Winter Cherry or Indian Ginseng powder is made from the root of the Rennet (withania somifera) plant. Organic Ashwagandha Root Powder. ASHWAGANDHA POWDER. Ashwagandha Powder, or Withania somnifera, is most commonly sourced from India, and the drier regions of India, such as the Mandsaur District and Madhya Pradesh.