An old favourite from East Africa and surprisingly hardy given a good pile of straw over the tubers in winter to stop them freezing. Forms a thicket of tall juicy green stems clothed in quite large lush green leaves and topped from late summer until it freezes with heavily fragrant white flowers.
The flowers have a very long spur behind, adapted to the long-tongued moths that pollinate them in the wild.
Remarkably easy given plenty of moisture and, as I said, a good thick mulch in winter.
1L pots ~ £8