Did you know that Begonias are among the plants that can multiply from just a piece of a single leaf?
You can use whole or partial leaves for this. Your easiest option is to use a plastic seedling tray.
The bottom half of the rhizome section will sprout roots while the top half will sprout new leaves
Begonias can be grown from seed at home and it’s a popular method to multiply some species, especially the outdoor varieties.