How to make your own low-tech vertical farm
The Belgian professor Willem Van Cotthem seems to have designed a do-it-yourself vertical kitchen garden system that truly deserves the low-tech label. On his blog, “Container gardening”, he explains how to transform normal plastic bottles into efficient containers (and a container rack) for growing all kinds of plants, even young trees (to be transplanted when reaching sufficient height). The beauty is that the water supply can be automated without the use of electricity