Streptocarpus can be propagated in several ways, including seed, leaf cuttings, division, and stem cuttings. However, most cultivated hybrids and ex-situ conservation collections are propagated vegetatively to ensure that new plants remain identical to the parent and do not lose their genetic integrity. The most common and reliable method of propagation is through leaf cuttings. Healthy, mature leaves are removed and inserted into a moist, well-drained rooting medium, usually a peat or fibre-based mix combined with vermiculite. Leaves may be planted whole or cut lengthwise along the midrib to produce several new plantlets. The lower part of the leaf often roots more vigorously and produces plantlets more quickly. Successful rooting is encouraged by high humidity, bright filtered light, and temperatures of around 20°C. New plantlets usually appear after several weeks and should be gradually hardened off before being transplanted into individual pots.

Mature plants may also be propagated through division, particularly when overcrowded. Each division should include healthy roots and can be replanted into fresh growing medium during the active growing season. The seeds are extremely fine and should be lightly scattered over the surface of a fine sowing medium without being covered. Germination is best under warm, humid conditions with bright, indirect light, and seedlings generally emerge within a few weeks. Under suitable growing conditions, plants may begin flowering within six months.

Streptocarpus silvaticus grows best in conditions that mimic its natural forest habitat. It prefers bright, filtered light, cool temperatures, and high humidity. Direct sunlight, especially during summer, can scorch the delicate leaves and flowers, while insufficient light may reduce flowering and encourage excessive leaf growth. The species performs well in shaded greenhouses, conservatories, patios, or bright indoor spaces, particularly near east- or west-facing windows. The plant grows best at moderate temperatures of around 20°C during active growth. While it can tolerate cool winter conditions indoors, frost should be avoided, as it can damage or kill the plant.

A well-drained potting mix is essential for healthy growth. Because Streptocarpus has a relatively shallow root system, shallow containers are generally better than deep pots. Plants often perform best when slightly root-bound, meaning frequent repotting is unnecessary. Careful watering is important, as overwatering is one of the most common causes of plant loss. The growing medium should remain lightly moist but never waterlogged. During warmer months, watering may need to be more frequent, while less water is required in winter. Allowing the soil to dry slightly between watering is usually safer than keeping it constantly wet.

Regular feeding with a balanced fertiliser high in potassium helps promote flowering without encouraging excessive leafy growth. Feeding can be reduced during winter or slower growth periods. Routine maintenance includes removing spent flowers and old flower stalks to encourage continued blooming and reduce disease problems such as mould. Dead or ageing leaves should also be removed. In mild climates, Streptocarpus silvaticus can be grown outdoors in shaded gardens or protected patios, provided it is sheltered from direct sun, strong wind, and frost.