I digress, if you read Part II, there are some very big statements there vs. conventional thinking_which I hate, how last century_on roots. The one that really piqued my interest is "in its natural state, marijuana may grow an extensive root system. In dry areas, the tap root can grow more than six feet deep in its seafch for water. In moist areas with fertile soil (such as in potting mixtures), the lateral root remains small, often only three or four inches long on a seven-foot-tall mature plant. The purpose of the growing medium is to provide adequate water and nutrients in addition to anchoring the roots, which hold the plant upright. By watering and fertilizing as needed, you could grow a six-foot plant in a four-inch pot" WHAT!