Rieger begonia does not grow in hot humid regions. It prefers….

Cool temperatures of 70˚ during day and 60-65˚at night with bright indirect sun (east window). It’s a popular winter flowering plant. Grow in well-drained peat/perlite soil mix or African violet soil. Feed with 1⁄2 strength houseplant fertilizer every 2 weeks when actively growing. When watering, let dry slightly between watering but not too dry or too wet.