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!
DIY Recycled bike tire trellis FOR any vine growing plant . even morning glories at curb side or green beans in the middle of the garden and great for tomato plants - plant the tomatoes near the center . will hold 2 plants one on each side - Clever!