This group of begonias will grow in filtered light or indirect light and may burn if they are in direct light. Tuberous-rooted begonias are especially common in cooler parts of the temperate zone. They produce large showy flowers on small upright or cascading plants. Most require special care when grown in warmer areas. Tuberous-rooted begonias often have a summer or winter rest period.
Some begonias prefer cool temperature.
Most are forest floor plants but some have origin or adaptation to high elevation in the tropics, hence their preference for cool to moderate temperature. The potting medium could be peat or compost or a mixture of peat or compost with sand or other ingredients. Although some will tolerate having wet soil, most do not. Avoid water with high salt content, especially sodium, as this will burn the plants and damage the very fine roots. Bright light would damage most begonias, though it does not burn many cultivars of wax begonia.