Posted: 25/06/2014 at 20:41
It is tender up here. I bought a seedling in penzance, and I was told to put it in a big pot, and feed it. It flowered the second year.
Try feeding it with a high potash fertiliser like tomato food.
Spectacular in flower, especially when backlit with a setting sun.
Of course , being monocarpic, they then die, so don't forget to save the seed.