Located in the heart of ginseng country (Marathon County, Wisconsin, USA), Hsu's Ginseng Enterprises, Inc. is one of the largest American Ginseng farming operation in the United States. Paul C. Hsu, the pioneering Chinese grower in North America, has been growing the highest quality American Ginseng since 1974 and currently has over 1,000 acres of ginseng farmland available for cultivation.