I have three tropical hibiscuses that live inside during the winter and outside during summer. I've noticed that all three probably need repotting--there are roots coming out the drainage holes. So my question is, given that I'm going to have to haul these guys in and out each year and, probably most significantly, find space for them inside!, how large a pot will I end up needing!?
If I need to stay with one final size for reasons of space, is there anything I should do to compensate?