Repotting New Begonias From Tubers

Question

I started 4 begonia tubers in a large pot, in a dark corner of the house and I’m ready to separate and repot them, but I think they’re too lanky (pict. #1). Should I cut them back first then re-pot? Can I re-pot and cut the stem at the same time? Can I cut them above a node that doesn’t have any leaf buds(pict. #2)? And can I re-root and propagate the stems I cut off? Also one of the begonias sustained an injury (pict. #1 & close up pict. #3) when it was sprouting (not sure how). Will this begonia be OK if I let it be or should I cut it off below the injury? The injured stem seems “healthy”.

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Answer 1

Don't be afraid to trim these tuber shoots back. If they are given proper soil and growing conditions they should come right back, hopefully strong and healthier. Definitely, get rid of those leggy ones. You can leave some of the stem with a node above the soil line, but even cutting them back to the tuber shouldn't be a problem if you need to.

Here's some helpful info:
https://www.gardeningknowhow.com/ornamental/flowers/begonia/growing-begonias-from-corms.htm