I live in northeast Ohio, so I too have brought my umbrella palm in over the winters. I keep it in my basement, in a tub of water, under a grow light (only b/c I don't have enough window space). I do not cut it back, but just treat it like a houseplant. Watch for spider mites. I usually bring mine in once the night time temps go down to 45 degrees. Last year the plant was so big (3 feet tall), I decided to start new plants - very easy. Good luck!