I dont think that wold work for me. There are about 70 young plumeria that have to go in the garage for the winter. I might find space for about 3 15 gal pots, but not more. Seems like some years ago i heard of a way they overwinter them where they. pluck them out of ground or pot , shake off dirt, and just hang them bare-root from the rafters. I dont really have any garage rafters, but it seems if you can do that, then perhaps they can be piled up on a shelf in garage. It gets quite cold in the garage in winter, but can be kept above freezing, like in the 40s, using a space heater.