Begonia Rex need a good bright, natural indirect light to thrive. Avoid direct sunlight.
Keep the soil moderately moist - try not to let the plant completely dry out. Water with distilled water if possible.
Loves high humidity - mist regularly around the plant but not directly onto leaves. Cluster plants together or use a pebble tray to create extra humidity.
Toxic if ingested
Treat like bulbs in the winter and store them dormant in the winter