Are these the ones that hold a gallon of water in the bottom? If so I wouldn't think they'd be a good idea. Roses don't like to have their roots sitting in water.

I googled them up and had a look. Should work, though I don't know how much better than in a regular pot. I'd think they'd be handy for potato growing, myself.

They are the fabric pots. There are a few different brands out there now. They just seem like they would be lighter than a regular pot, so easier to move around if I need to.