You could bolt the hoop to a wall in your garden and use it to hold a large round plastic pot with annuals or perennials. It might look better if you paint it black, green, or something other than orange. Or you can put it back together and bolt the whole structure to the wall, use the hoop in the same way, and paint a pretty mural on the backboard. Or, use the hoop to contain a nice round birdbath, and use the backboard part as a trellis support and grow some vining perennials over it.