I keep mine in my cold GH it probably goes no lower than 30& is briefly.I keep it on the dry side also.It useually stays in bloom durring the winter too till the days start getting longer then the flowers
are done,it loses it leafs.Its been growing
new leaves for 3 weeks now.I'm coastal zone
8B in TX.
you can trim its tips back some to shape it& it will make it a fuller plant
also.I've had some limbs get over 20 inches.I have mine in a hanging coir basket.
mine just has the grow light for lighting in cold GH.the plastic blocks alot.