Thanks for the info Lin! I've insulated that particular garage bay attic and door since I last overwintered anything in there but I noticed it was considerably warmer last winter. Adding heat or light if needed should be easy enough but I might need a humidifier as well. I got in an auto accident last time I overwintered plants and lost everything. I'll be back in my house full-time soon and I'll definitely be adding Brugmansias again. The croton might not pan out but I'm going to give it a try.
Nothing ventured, nothing gained.
