I've accumulated a small group of these plants over the past few years and have generally tried to leave them in their pots in my cool basement with a monthly watering...always losing some.
I frequent the brugmansia forum and someone posted a pic of their huge Thai Giant plant. In followup postings he mentioned that he carries the bulbs (right term?)of his alo/colo over the winter dormant in buckets of water. It just seemed to me I'd end up with a bunch of rotten bulbs.
...so thought I'd come over here to hear from those who carry these over the winter, especially folk in the upper midwest.
Thanks in advance,