Leaves: most trouble is encountered with the foliage;
- Leaves rotting at the base is most likely due to wet conditions, such as impeded drainage, over-watering, compost too heavily firmed or the base of the pot sitting in water accumulated in the bottom of the pot-holder. Remove the rotting leaves and allow to dry
- Oversized leaves indicate poor light and/or excessive feeding
- Leaves may develop areas of brown or dead tissue leaf scorch due to too much exposure to sun
- Ends of leaves die back in autumn or winter. This is a natural condition. Simply trim them off. Sometimes in winter an abscission layer can form causing a line across the leaf where the tip will go yellow and die but the base will stay green
- Leaves wilting can be due to under-watering in which case water the plant, or over-watering in which case allow it to dry out. Wilting leaves can also be caused by vine weevil or root mealybug
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.