I have a recently purchased Jordan Japanese Fullmoon Maple Shirasawanum 2 - Year Live Plant . The root ball measures 3inch X 3inch X 8 inch. This is an extremely slow growing tree. I would like to put it in a large 1960s Japanese bonsai pot. that measures 16 inch diameter and 12 inch depth. This would be big for the root ball but I would never have to move it again.... and it is a very nice pot from the sixties. Is the pot too large?
I live in zone 6-7 . How should I winter this pot. It will live in a outdoor, but protected entry, but I am thinking about bringing it into the unheated garage after it has gone dormant. Any comments, warnings, or advice is appreciated! Thank you.