Chilean Potato Vine (Solanum?)
My daughter had one of these growing in East London in a very small garden against an east facing wall and it did not appear to get huge amounts of sunshine due to external overshading plane trees. The soil was not great and yet it appeared to do very well, flowering profusely. She inherited it and it had likely been there for at least a decade. I am thinking of putting one of these (the blue variety) against a north facing wall in Weymouth. Does anyone have experience of them in these projected conditions? Hard pruning once a year seemed to control it's height, again without any apparent detrimental effect.