Yep, I turn part of my garage into "Plumeria Storage", building a (temporary) greenhouse that is about 6' W, 10' L, 7' T. I do heat it but use the smallest heater I have since this greenhouse is wrapped in solar blanket material. Since there is some natural light in this greenhouse, I could probably keep the plumeria going through the fall/winter months, though they went last year without a drop of water and were in full dormancy. I may experiment and keep some of them watered and leafed this year.