Dividing Tuberous Begonias - Knowledgebase Question

Palos Heights, IL
Question by christinej
March 26, 2001
I tried your method of cutting begonia tubers into pieces with at least two sprouts each but when I started them indoors the tubers seemed to have rotted. First the sprouts died and when I dug them up to see what was wrong the pieces of tubers were very soft and had a kind of pink ooze coming from them. What did I do wrong?

Answer from NGA
March 26, 2001


It sounds as if they have become infected with some type of bacteria or fungus. Open wounds allow easy entry for disease. Did you use sterile tools and a soilless potting mix, as well as dust the cuts with a fungicide before planting? It's also a good idea to let the cuts callus in the open air for at least several hours or a day after dusting with fungicide before planting. This helps seal the cut. Finally, the tuber must have some existing roots as a rootless section can not produce new roots and will just die. I hope this info helps.

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