riverboy there are alot of markets for a variety of different herbs. the two most popular are ginseng and goldenseal(yellowroot). there have been in the last couple of years a demand for black cohosh. If u really want to know more i would suggest buying the book Ginseng, Goldenseal and other woodland medicinals by W.Scott Persons and Jeanine M. Davis. It is an excellent book with half the book being on ginseng and the other half on many other herbs.