Gardening Questions And Answers
The plantlet will produce its first bloom in 1-3 months, depending upon variety and conditions. At this point in time, we pot the plant into a 3″ pot, where it should continue to grow and bloom. Unless it is a small, or compact, growing variety, most streps will then need repotting into a 5″ pot […]
Within a few weeks the plants should begin flowering. Water regularly from either above or below only when the plant requires it. It is important not to overwater Streptocarpus, wait until the compost feels dry to the touch. Overwatering, in particular regular overwatering, will cause harm to the root system.
Powdery mildew can occur on the leaves, the flowers or the flower stalks. The disease shows as whitish spots which gradually expand to form larger circles. Again, good air movement will help to prevent this disease. For some reason, purple-flowered streptocarpus seem more prone to the disease than other colours.
Provided conditions are right, these will continue to flower profusely through the winter. They will need a very bright situation and a temperature at least 10°C (50°F). Again be careful with the watering. As I write [November 2005], we have hundreds of Crystal Streptocarpus smothered in flowers and still full of buds.
A spray with a proprietary insecticide either as an aerosol or mixed with water will soon cure the problem. We largely use biological control of pests on our nursery and have found the method very successful. It must be noted however that biological methods alone may only control pests but not eradicate them.
Your streptocarpus can also turn yellow if the lighting and temperature conditions are not appropriate, and this will also cause wilting. The light should be medium and indirect. Your streptocarpus can also turn yellow if the lighting and temperature conditions are not appropriate, and this will also cause wilting.