Christi - same thing applies. Bareroot them for the winter. There is no cell activity when plants are dormant and so they don't need anything. In Houston, which is a big Plumeria center, people do this every year. Into the shed by Thanksgiving, and out in March (or thereabouts).
A well-known grower there has a huge garage for his Motorhome, and he pulls it out at that time, stores all his plumeria in the garage (some hanging from the rafters!!) and drives to the Florida Keys for the winter!
