Hi there! I'm on a second floor balcony, south, southwest exposure. I'm wondering what types of trees would be happy to grow here? I'd have to haul it home myself, so I'm looking at one that is on the smaller size starting out. I'm not sure if a Japanese Maple is an idea, or how hardy they are. But hardy is good. There is a slightly sheltered area in the north corner, where it would still get plenty of sun, but some protection from the winds. Any ideas? Thanks in advance.