When you're living at 7,750 feet above sea level, with a summer growing season of 80 days, at best, between killing freezes, how can you grow your own food? The answer, as it turns out, is pretty cool: A geodesic dome solar greenhouse.
trellis laid on an angle for climbing plants; good solution for heavier climbers (quash, watermelon) b/c of thickness & strength of wood panel. Once the vines start climbing the trellis, they provide shade for lettuces underneath.
DIY Greenhouse Underground A trench runs down the middle of this DIY greenhouse for any climate. The concrete block walls form a heat sink that soak up the heat during the day and release it slowly as temperature cool. Farm and Garden - GRIT Magazine