Simply tie bunches of the flower stems together with twine and hang in a barn, shed, or other well-ventilated structure to dry for at least one week before bringing them to market. Rake back the leaves and plant them directly in the native soil — no fertilizer necessary. Wild ginseng root, a medicinal herb which is found in forests throughout much of the northern and eastern United States, is harvested on a commercial scale and sold for astonishing prices, largely to Asian buyers.