I overwintered several pots of wax leaf begonias. They did fine, and bloomed virtually all winter. Now they are way too tall and thin, but still blooming. Is there any way to get them to fill out and still enjoy the flowers?
I would sacrifice a few blooms now, in the hope of gaining more this summer. Clip off the spent flowers, and prune the plants back by one third to one half (depending on how tall they are). Then replant the part you cut off, by sticking them down into moist soil. Not only will your mother plants begin to fill out, but the tops should root, and you have doubled the number of plants. They should be in bloom before you know it.
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