Full sun to partial shade. Avoid direct sunlight. They need some light to keep their coloring, but bright, indirect light is best.
Rex begonias prefer light, rich soil. A peat-based potting mix is ideal for containers.
Water rex begonia should be watered when the soil or pot feels dry, but don’t wait until the plant starts to wilt. You can cut back on water during their dormant period in the winter, watering only when the pot dries out. Humidity is crucial to keeping your rex begonia happy, however, spraying the leaves can lead to spotting. It’s better to cluster your plants, so they can create their own humid environment, or use a pebble tray.
5" size pot