I am growing this beauty ( Hyophorbe lagenicaulis -Bottle palm) in pots as I am not sure it can survive in winter in ground I keep it in pots, its been on Deck but now we are having colder nights I have brought it into my office- room anyone growing them in pots? please show yours... how big they can get in pots and how they would be happy in pots? how cold hardy they are?