Biodynamics is a step beyond Organic. It involves growing and husbanding with natural systems, with the phases of the moon and without chemicals or unnatural treatment of animals. I believe it also includes a philosophy of life for those using the system. Most of it makes sense to me except the making of a potion, which has to be stirred either clockwise or widdershins, can't remember which, then buried in a cows horn for a while then used to sprinkle on the land. That bit puzzles me, but it was explained as more to do with the community ceremonies and rituals involved with a Biodynamic system than any real benefit to the land.