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Cape Primrose Care Background Streptocarpus, which are commonly named Cape primrose, are a type of Gesneriads, closely related to African violets (Saintpaulia). They are native to parts of Africa and Madagascar, often growing on shaded, rocky hillsides or cliffs. The name Cape primrose means ‘twisted fruit,’ as its ‘fruit,’ or seed casing is spirally twisted. The colors of the flowers range from red, white, or yellow to a deep blue (close to black). Many flowers have markings in the “throat.” Method of Propagation Cape primrose are propagated by seeds, divisions, and leaf cuttings. The tiny seeds are dust-like and should be sown on the surface of the growing medium. They require light to germinate. The leaves can be cut into sections or down the middle to remove the central vein and then planted horizontally in light potting soil containing vermiculite and perlite. Cape primrose flowers are born on short and long peduncles (flower stems) that attach to the leaf stem. Several peduncles may be produced per leaf. New flowers come with new leaf growth. Culture in the Home Cape primrose require bright indirect light and can be grown near a window or under fluorescent lighting. When the soil looks and feels dry on the surface, they should be watered thoroughly. They prefer to dry out between waterings. Over-watering or leaving the pot standing in water will cause root rot. Remove spent blooms. Cape primrose are relatively free of pests, but occasionally can be attacked by minor pests. If this should occur, apply the recommended pesticide. Year-round, it is important to maintain good air movement around your Cape primrose. Stagnant, humid air promotes a soft stem rot disease known as botrytis. If your Cape primrose is closely packed in with other plants, powdery mildew, or small white powdery patches may occur on the leaf’s surface. These patches can spread rapidly. For either disease, provide better ventilation, lower humidity, and spray the plant with a recommended fungicide. Fertilize regularly with a houseplant food for blooming plants according to package recommendations. Devon, PA • 610.293.0800 | Exton, PA • 610.363.0800 | Wilmington, DE • 302.356.9800 | waterloogardens.com inc.