We had a couple of dracena's in a houseplant that was given to us. We took them and planted them into the garden. They did very well. The following year, we planted each of them into cedar tubs (large cedar tubs) They grew to be huge in size. That was a couple of years ago and they still would have been good except the frost got them this year and they died....They were beautiful while they lasted though.
(p.s....now we are faced with struggling, trying to get these huge
plants out of the tubs. It would be a good theme for a cartoon watching us struggle)