i've heard talks around here about putting them in greenhouses. so being my first year and didn't want to lose them due to winter and me not knowing any better, i put them in one. took off one side of the panels and covered the rest with plastic to help. and i tell you what. it worked. my hive is strong and going. just today i checked on the food supply(drivert sugar and patties). when i got in the greenhouse i could here the buzzing from them inside. it was 48 degrees outside and 50 degrees inside, and i have a temp gauge on a tree and one inside. so from me that's what i'm gonna do. not saying it works for everyone but it did me.