spent an afternoon with a wonderful retired botanist professor from Ghent University, close to me in Brussels; Check out his you tube Willem VanCotthem. His method is simpler, cheaper and totally doable for us in these dry places. need help this spring at 3 Moons project an hour west of Las Vegas, in the Mojave Desert, build with earth bag construction, a little dome, walls and this bottle garden!!!! I> have great compost toilets, neighbor with horse manure and old kitchen scraps; to help our mostly' poof' earth:
help me with seeds, fava beans, greens, squashes, I'll start in early March. right now, still in Brussels, but will be there!! give a shout!!! thanks!!!