What a cute and clever idea! Clear around the planting area, for productive growth of the beans. Greate hideaway for kids in the yard, leave the grass in the center.c- I might do this even if i hate beans!
The greenhouse in the country: do with their hands out of PVC pipe. Detailed instructions with diagrams for the greenhouse of plastic pipes. Two variants of the greenhouse: one entirely of PVC pipe, the other of the pipes on a wooden frame.