Update: After having these on the wall for a few months, I noticed a bit of rust on the bottom edge. When I removed the plants, the bottom of both pieces were covered in rust. I had used plastic bags to put the plants in, but they were not perfect. I would not recommend these unless you want to use them with fake plants. Maybe if they came with an insert that fit well, they would be ok. But as they don't, they should not get wet. Doesn't work with live plants.

I think these could do without the front hoop piece, but they look nice. It would also be nice if they came with a plastic insert for planting into because it is an unusual shape, and I think mostly you would not want to plant directly into it. But I was able to use a freezer ziplock in one, and three small four inch pots in the larger one to put my plants into.