Appearance
The flowers are pink or white, borne in dichotomous cymes from late summer through fall in USDA U.S. Hardiness Zone 7. As the common name "hardy begonia" implies, it is winter hardy in some temperate regions.It can overwinter well in hardiness zone 9a in southwestern Japan as tuberous roots or bulbils. Above-ground parts of this plant eventually die as temperature lowers. However, it is generally regarded as hardy to zones 6-7.
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