While the bonfire begonia is a perennial plant, it is does not adapt well to harsh winters. It is possible to keep bonfire begonias alive over the winter with the proper care and weather conditions.
For a bonfire begonia to thrive outdoors in the winter, it is best to plant them in climates with a mild winter. According to the Anthony Tesselaar Plants website, keeping bonfire begonias outdoors in the winter is only recommended for planting zones seven and higher.
In climate zones six and below, bonfire begonias require digging up, potted and grown indoors over the winter, according to the Backyard Gardener website.
Outdoors, bonfire begonias require division about every three years, according to the Anthony Tesselaar Plants website. Dig up bonfires as winter approaches. Divide and replant the begonias and prune off old tubers during this division process.
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