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How to Repot an Indoor Begonia

Rachel is a passionate plantsperson, YouTuber and author living in Ireland. She grows a wide range of hardy subtropical and tropical plants.

Learn how to repot indoor begonias to keep them healthy and beautiful.

Learn how to repot indoor begonias to keep them healthy and beautiful.

Repotting Begonia Houseplants

The begonia makes a fantastic houseplant and is especially great for less than well-lit rooms. The Begonia group is enormous. With more than 2000 species in the genus, begonias are one of the largest genera of flowering plants in the world.

Indoor begonias need repotting when their tubers outgrow their current pot, or when the potting mix is more than three years old or has become unsuitable. The good news is that repotting can be done at any time of year, although spring, when the plant starts regrowth, is best.

Begonia flower.

Begonia flower.

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Step-by-Step Guide to Repotting Begonias

  1. Remove your begonia from its pot by gently squeezing the sides, paying attention to not damage the fragile tubers.
  2. Shake off any loose, old potting mix.
  3. Mix two parts potting mix and one part perlite. This will create a light, well-drained potting mix for your indoor begonia. There are lots of different recipes out there, but this is my preferred recipe.
  4. Add a little water to make sure your mix is very slightly moist.
  5. Choose a pot that is the next size up. Pay attention to the root ball size and the overhanging tubers rather than the leaves, and ensure that you have one inch of space between the plant and the edge of the pot all the way around. Tip: Select a shallow, plastic pot with drainage holes. Plastic works best for humidity-loving plants like begonias.
  6. Place a little potting mix at the base of the pot and position your plant. If you have overhanging tubers, allow some space for them.
  7. Backfill with your potting mix and firm down with your fingers.
  8. Give your newly potted begonia just a little water. Newly potted begonias respond badly to overwatering at this stage, especially if you're repotting in winter, so less is better than more.
Gorgeous indoor begonias.

Gorgeous indoor begonias.

What to Expect After Repotting

After repotting, you can expect your begonia to have a growth spurt producing lots of beautiful leaves and maybe even some flowers. Happy growing.

Learn More About Begonias

© 2021 Rachel Darlington

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