Planters from discarded tires aren't anything knew in the gardening world. When I was a kid my best friend’s mom had a container garden in the parkway, hell strip for those of you gardening outside Chicago, made from old car tires. They were there for years before I paid any attention to them aside from thinking they were ugly or the occasional attempts to tip them over. One Earth Day we had a presentation at school on recycling and the speaker showed us how flat tires are repurposed and kept out of landfills by gardeners who turned them into container gardens. It was as if someone had flipped a switch in my head and I started noticing garden pots from recycled tires all over the place. The planters didn't seem to ugly to me after that.