The tuberous begonia is a non-hardy perennial with a rootstock. This is why it is often grown as a houseplant. However, it can be planted outdoors provided certain rules are followed, particularly avoiding frost. To have more tuberous begonias, it is possible to propagate them. This operation requires great care. Follow our step-by-step advice on how to propagate tuberous begonias.

propagate tuberous begonia, begonia cutting

Purple tuberous begonia propagated in a bucket (Photo Laura Blanchard)

When to take cuttings from a tuberous begonia?

The tuberous begonia is propagated by cuttings after a forcing phase, which takes place in March or April and lasts about 1 month. Propagation by cuttings can therefore begin in April or May.

What equipment is needed?

For forcing

  • a tray or buckets (our buckets made from plant fibres are 100% natural and biodegradable!)
  • sowing compost

For propagation by cuttings

heated greenhouse for cuttings

How to propagate a tuberous begonia by cuttings?

Forcing a tuberous begonia

Forcing tuberous begonias is simple. It involves placing the tubercles on moist compost for about 1 month to encourage germination. To learn more, check out our tutorial: How to force a tuberous begonia?

Propagating a tuberous begonia by cuttings

  • Fill the bottom of the mini greenhouse with coarse, well-draining compost
  • Cover with sowing compost, firm down and water
  • Take a shoot from a germinated tubercle by carefully cutting a piece of the tubercle (heel cutting) without damaging the plant.
  • Make a small hole in the compost and plant the cutting, leaving the tip of the tubercle exposed above the substrate
  • Cover the mini greenhouse and keep it closed to create a closed propagation environment
  • Place the mini greenhouse in a warm spot at a minimum temperature of 18°C in a bright location but not in direct sunlight.
  • Spray regularly to keep the substrate moist without overdoing it to avoid mould. You can air it out every 3 days. Also ensure the plant does not touch the sides of the mini greenhouse, as this may cause rotting.
  • You can replant the tuberous begonias outdoors around mid-May after the last frost.

Discover our complete collection of begonias!

tuberous begonia in the ground