Solanum quitoense, known as naranjilla in Ecuador and as lulo in Colombia, is a subtropical perennial plant from northwestern South America. The specific name for this species of nightshade means "from Quito."
The naranjilla plant is attractive, with large heart-shaped leaves up to 45 cm in length. The leaves and stems of the plant are covered in short purple hairs. Naranjilla are delicate plants and must be protected from strong winds and direct sunlight. They grow best in partial shade.
The fruit has a citrus flavour, sometimes described as a combination of rhubarb and lime. The juice of the naranjilla is green and is often used as a drink.