Family: Begoniaceae

Scientific Name: Begonia hiemalis Rieger Begonias

Common Name: Rieger Begonias, Winter Flowering Begonias

DescriptionA Begonia used as an annual or grown indoors as a flowering plant.
Pronunciation(be-GON-yuh)
Plant TypeAll Plants, Perennial Tender
Hardiness Zone10
Sunlightbright indirect, partial sun, will burn in full sun
Moistureaverage, as an indoor plant water when the surface of the media becomes dry, will easily rot from over watering, prefers higher humidity
Soil & Siteorganic, well drained
Growing Mediacoarse well drained
Temperatureaverage house
Flowerslots of delicate looking flowers with the texture of fine tissue paper or crepe paper, many different colors
Leavessucculent stems and leaves
Rootstuberous roots
Dimensionsvaries
MaintenancePlants go through a dormancy period. The on set of this is yellowing of leaves, plant slows. Water less frequent. Many people suggest knocking the plants out of the pots and storing the tubers clean and dry. I have had some luck with letting Rieger Begonias go through dormancy in their pot. A problem can be Powdery Mildew.
Propagationcuttings
Cultivar OriginThe genus name "hiemalis" was coined by Karl Fotsch (1933) to classify all the hybrids from the Veitch Nursery (UK) plus others.
Misc FactsThis group is often classified in the Tuberous Begonia group. The species name "hiemalis"means winterly, referring to the time they bloom.
Notes & Reference#117-Begonias (Mark Tebbitt), The American Begonia Society (www.begonia.org)
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