Gardening is for everyone even if you don't have a place for a garden in the ground. Many times gardening is done in some pretty unusual places using some pretty unusual stuff. But still, they are able to brighten the area with flowers, let you pick a few vegetables and most of all, just have fun growing plants.
Gardening in unusual places sometimes means gardening in a container. There are no rules for the right kind of container. A container is just something that can hold soil and has holes in the bottom to let water out.