Like potatoes and tomatoes, Solanum crispum is a member of the Solanaceae. Common names for the species include Chilean nightshade, Chilean potato vine, and Chilean potato tree; in addition to Chile, it is native to Peru.
In ideal conditions, Solanum crispum can exceed 6m in height, as one might expect from its common names. Depending on climatic conditions, it can be either semi-evergreen or evergreen. The fragrant flowers feature prominent yellow-to-orangeish anthers. Like many members of the Solanaceae, the fruits change colour as they develop. The small berries produced by Solanum crispum first appear green, then transition through yellow to orange to (finally) purple. Accounts vary as to whether they are poisonous or not, but based on this account, it is doubtful anyone would eat enough to know (“The flavor was so violently appalling it made me spit & spit & spit, & I could still taste the hideous stuff an hour later”).
A cultivar of Solanum crispum, ‘Glasnevin’ is preferred over the species in cultivation. As noted on the BBC Gardening site, Solanum crispum ‘Glasnevin’ is both slightly hardier and a more prolific bloomer in comparison with the species. For this (and other reasons), ‘Glasnevin’ received the Royal Horticultural Society’s Award of Garden Merit.
Plants should be grown in sunny situations with moist but well-drained non-acidic (close to neutral) soils. Once established, plants are generally trouble-free (though make sure you have the space for this vine!).