Cochliasanthus caracalla, snail vine, corkscrew flower
(Syn. Vigna caracalla). A deciduous perennial vine with a tuberous root system rather like a Dahlia, which needs protecting from harsh frost. Fast growing in spring/summer, the twining stems eventually produce fabulous long racemes of flowers from summer into early autumn. The large creamy white flowers have hints of warm purple and are beautifully scented, with petals twisted to form a pattern resembling a snail shell. Closely related to the scarlet runner bean and will form attractive dark purple seed pods which also retain some of the scent. Will climb to around 2 metres. 1 litre pot.