Download Cape Primrose Care

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.
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