Posted: 16/10/2014 at 14:47
I have had a corkscrew hazel growing in a pot successfully for 15 years, and in that time it's not even been re-potted; the result is that it only grows to the size of the pot but still gets catkins etc.
However, last year I created a new border and felt sorry for it - and yes, I took it out of the pot and planted it in the border - you can probably guess the rest - HUGE!! Evidently the pot stunting it's growth did not have a permanent effect!
In answer to the original point - yes they're fine in pots, and in hindsight I would have left it there...