This version of above-ground gardening utilizes grain sacks filled with compost with holes punched into it. The PVC piping you see here is a drip irrigation system that runs from a windmill that pumps water out of a well.
This verticle-axis windmill uses a technology that has been used in ancient China. The rope has knots that suspend small washers made of leather. The rope feeds into a tube down in the well. You can see the tube on the left of the blue rope. The washers pull small amounts of water up through the tube into the bucket at the top of the tube. There is a pvc pipe attached to the bucket that leads the water into the irrigation system for the above-ground gardens.
