United Kingdom 
will poinsettias stand been but in a big pot and try an grow into a small bush for outside.mine is doing great it is so big
29 Jul, 2011
Answers
http://www.growsonyou.com/question/show/54069
Here is a link to a similar questions a couple of weeks ago. Hope this helps
31 Jul, 2011
Not winter hardy though. Will need overwintering in a frost free greenhouse or conservatory. If you want the red bracts you have to give it the right number of hours of darkness - I hope somebody else will be able to tell you how many. You have done very well to keep it!
29 Jul, 2011