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Streptocarpus are popular, relatively inexpensive, moderately easy-to-grow houseplants in a wide range of attractive colours which will produce flowers over several months. They are also easy-to-propagate.
Streptocarpus (Cape primrose) are easy to cultivate in a well-lit spot in the house.
Clumps of older plants can be pulled apart and divided when they are re-potted in the spring.
Listed below is a selection from the huge range of cultivars available:
Streptocarpus ‘Harlequin Blue’: (Chelsea plant of the year 2010) The first flat-flowering bi-colour streptocarpus, with yellow on the lower petals making a striking contrast to the baby-blue upper petals. A compact plant with masses of flowers.
Streptocarpus ‘Crystal Ice’ PBR: Produces white flowers with blue veining all year round.
Streptocarpus ‘Falling Stars’ AGM: Light blue, veined flowers with a white centre.
The RHS is running a trial of streptocarpus in conjunction with Dibley’s Nursery in 2013/2014.
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Leaves: most trouble is encountered with the foliage;
Flowers: these are usually trouble-free.
When it comes to pests streptocarpus can suffer from aphids, glasshouse leafhopper, mealybug, tortrix moth, tarsonemid mites, sciarid flies and vine weevil. Diseases such as botrytis and powdery mildew are also an occasional problem.
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