potting up is when the roots fill the pot but if you are into bonsi you need to keep the roots in a small pot

Thank you for the reply.

I am thinking of doing bonsai with some of the babies I just got from the nursery. I wanted to do one with the root over rock, and have been looking into that...although not sure about fuchsia bonsai as there isn't much out there on the internet about them.

I see the usual trees used for bonsai everywhere...but not the fuchsia.

Go to the British fuchsia society web site they have a bit about it you will need a small plant and a slow grower perhaps f loxensis mite do the job