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!
I don't have a space problem in my garden, but this is a great idea if you do! 20 Creative Ways to Upcycle Pallets in your Garden - using pallets both vertically and horizontally to maximize growing space.