How To Take Care Of Rieger Begonia. Use a seed-starting mix and keep the cuttings evenly moist. For this plant you need a cold and dark place.
How to deadhead Rieger Begonias. Fertilize your Rieger begonia with a water-soluble houseplant or flower fertilizer while its actively growing. Stop feeding the plant after it has stopped blooming and gradually reduce water until the soil is barely moist.
Some consider it a toss plant but with proper care and a little know-how it can bloom up to 6 months indoors and after a rest period be.
For this plant you need a cold and dark place. Ideal temperatures are 65 to 70 degrees during the day and 60 to 65 degrees at night. Copper colored foliage indicates the plant is receiving too much light. Tuberous begonias crisp and burn in hot dry air but may rot or mildew in long periods of dark humid weather.