One other thing Jeff, Just a quick note. The soil, type of ground(rocky, dry, wet, ect..)and location(mountains, hills, flatlands, wetlands, North, Deep South, ect..) all play a factor in how the seng will grow. If I take a root from a rocky-out-crop(rocky area) and plant in my back yard in soft fertilized soil, the root will know it's no longer in the rough harsh rocky area that it adapted for from it's birth and will cause this change and sometimes they want even make it. I've dug seng off the sides of cliffs before with nothing more than a little moss and what little soil was washed or blown in the crack of the rock to give it just enough nuetriants to live there.