Lycianthes rantonnetii ‘Royal Robe’ is also known as the Solanum rantonnetii, Blue Potato Bush, or Paraguay Nightshade. It is part of the Solanaceae family of plants. It is native to South America. Lycianthes rantonnetii was previously called Solanum rantonnetii, Solanum is a much larger genus therefore this more precisely identifies the plant and though it is related to the potatoes this plant is poisonous to humans. It is a tropical, evergreen shrub with fragrant violet flowers.
Lycianthes rantonnetii flowers in the summer and autumn. After flowering, it produces red berries. Usually can be planted outdoors in milder climates otherwise indoors. The trumpet-shaped flowers are blue-violet with distinct yellow centers and fragrant.
Plant it in the sun but sheltered in moist but well-drained soil. Watch out for grey molds and aphids or red spider mites, especially when it is indoors or in a greenhouse. Lycianthes rantonnetii attracts butterflies and bees and birds.