I have just found the answer to whether I can split my double begonias which have now now grown huge, but I don't have sulphur powder. Is there an alternative I can use to dust my double begonia tubers with once they have been split?
Certified GKH Gardening Expert
That is used as a fungicide to help ward off disease. You can also try giving them a quick did in a baking soda solution, which also acts as a fungicide:
I usually use ground cinnamon for this. Cinnamon is very anti-bacterial. I grow orchids and always dust cuts with cinnamon after dividing them,