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Zones 12, 13, 15-28, H1, H2
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Lycianthes rantonnetii

Blue Potato Bush
Evergreen, Shrubs

From Paraguay and Argentina. As a shrub, it grows to 8–12 ft. tall and 6–10 ft. wide. But it can be staked into a tree form or, with support, grown as a vine to 12–15 ft. or more. Can also be allowed to sprawl as a groundcover. Leaves are bright green, oval; violet-blue, 1/2–1 1/2-in. flowers throughout warm weather, often nearly year-round. Informal, fast growing, not easy to use in tailored landscapes; prune hard to keep it neat. In severe cold, leaf drop is heavy and branch tips may die back. ‘Royal Robe’ is more compact (to 6–8 ft. tall and wide), bears darker purple flowers over a longer season. A variety with white-variegated leaves is sometimes offered. 

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