What is the best way of propagating a Begonia rex plant?

The simplest way to propagate Begonia rex is to take leaf cuttings.

Can you advise me how to store my begonia tubers, and also, what is the best method of propagating begonias?

Lift your begonia plants before the first frosts arrive. (see week 44)

Keep the tubers dry until February or early March then plant them in trays of a peaty compost to sprout.( see week 10 )

Water carefully, and raise the temperature to 16°C. (60°F).

There are a couple of methods to propagate begonias; i.e.

rooting leaf bud or leaf cuttings and place in a propagator.