Begonia x hiemalis (Rieger Begonia)

The Begonia x hiemalis, commonly known as the Rieger Begonia or Elatior Begonia, is a popular ornamental flowering plant. Unlike mass-produced consumer goods, this is a biological product often grown in local nurseries and greenhouses globally to serve regional horticultural markets. The plant is a hybrid cross between tuberous begonias and Begonia socotrana, originally developed in Germany by plant breeder Otto Rieger in the mid-20th century.

Today, these plants are cultivated by numerous independent growers, commercial nurseries, and horticultural brands across Europe, North America, and Asia. There is no single ultimate owner of the 'Begonia' brand as it is a biological genus, though specific cultivars may be patented by various international breeding companies such as Dummen Orange or Syngenta Flowers. Because they are living organisms, their country of origin in a retail context is typically the country where they were raised in a greenhouse prior to sale.