Patty in Wisc

BigDog, just want to thank you for starting this thread...I learned a lot, and have read it few times since last yr.
I have 2 Ice Cream from last June when they were 2 inches high. They were in my sunroom all winter with temps low 45F to about 55-60 high. They grew slow, but one (in 30 gal pot) got to be over 6 ft from soil. I just planted it out inground & I know it will really take off. In fall, it will be too big to get back into sunroom (12 1/2' ceiling). I have crawl space under SR but it's open & it will be too cold. I'm in zone 5 where we can easily get to below zeroF.
My question is, if I wrap it to make it dark, & lay it sideways on cool SR floor, would it go dormant or will the room be too warm? (45 to 55F). I do not have a garage, but have a uninsulated shed. To put there, I would really have to wrap it well! I know it's early, but like to think ahead.
Also, how do you acclimate your bananas to sunlight after storage?
Thanks much,
Patty (in Milwaukee)

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Patty
Z5