I had loads of these when I lived in Jordan. They were very easy to grow there and used to smother the the fences. Even at Christmas they were still bright and colourful. There was also a red, a salmon and a white coloured one, but the purple one was the easiest and most popular. I brought a few back to England but they didn't do so well even in the house, I think the CH made them dry outtoo quckly in their pots. Tried to put them outside on a south facing wall but that was the end.