Updated: July 21, 2023

Rex Begonias are beautiful and popular houseplants known for their striking foliage. With their vibrant colors and interesting patterns, they can add a touch of elegance to any indoor space. Like all potted plants, rex begonias eventually outgrow their containers and need to be repotted. Repotting not only ensures the plant has enough room to grow but also allows for the refreshing of soil and the prevention of root-bound conditions. In this article, we will guide you through the process of repotting your rex begonia plant, step by step.

Step 1: Choose the Right Time

The best time to repot a rex begonia is in the spring or early summer when the plant is actively growing. Avoid repotting during the dormant season as it may cause undue stress to the plant. Signs that your rex begonia needs repotting include roots growing out of drainage holes, slow growth, or the pot becoming too heavy due to excessive root growth.

Step 2: Gather the Necessary Supplies

Before starting the repotting process, gather all the supplies you will need:

  • A new pot: Select a pot that is one size larger than the current one. Ensure it has drainage holes to prevent waterlogging.
  • Potting soil: Use a well-draining mix specifically formulated for houseplants.
  • Perlite or sand: Adding perlite or sand to the potting mix helps improve drainage.
  • Watering can: Have a watering can nearby to moisten the soil after repotting.
  • Pruning shears: Clean and sharp pruning shears will be used for trimming any dead or damaged roots.

Step 3: Prepare the New Pot

Thoroughly clean the new pot with warm soapy water and rinse it well. This helps remove any potential pathogens that could harm your rex begonia. Fill the pot about one-third full with the potting mix, leaving enough space for the root ball.

Step 4: Remove the Rex Begonia from its Current Pot

Carefully remove the rex begonia from its current pot by gently tapping the sides of the pot or squeezing it. If the plant is stuck, use a knife or your fingers to loosen the edges of the root ball. Be cautious not to damage the roots.

Step 5: Inspect and Prune the Roots

Once the rex begonia is out of its pot, inspect the roots for any signs of rot, damage, or diseases. Trim away any dead or damaged roots using clean pruning shears. This helps promote healthy growth and prevents rot from spreading.

Step 6: Place the Rex Begonia in the New Pot

Position the rex begonia in the center of the new pot, ensuring that it sits at the same depth as it was in the previous pot. Fill in around the root ball with fresh potting soil, gently firming it down as you go. Leave about an inch of space between the top of the soil and the rim of the pot to allow for watering.

Step 7: Water and Settle

After repotting, water your rex begonia thoroughly until water drains out of the bottom drainage holes. This helps settle the soil and ensures that there are no air pockets around the roots. Allow excess water to drain away before placing the plant in its desired location.

Step 8: Care after Repotting

After repotting, it’s essential to provide proper care to help your rex begonia adjust to its new environment:

  • Light: Rex begonias prefer bright, indirect light. Place them near a window with filtered sunlight or provide artificial grow lights.
  • Temperature and Humidity: Maintain a temperature between 65-75°F (18-24°C) and humidity levels of 50-60%.
  • Watering: Water your rex begonia when the top inch of soil feels dry. Avoid overwatering, as it can lead to root rot.
  • Fertilizing: Feed your rex begonia with a balanced liquid fertilizer diluted to half strength every month during the growing season.
  • Pruning: Regularly remove any yellow or dead leaves to maintain the plant’s overall health and appearance.

Conclusion

Repotting a rex begonia plant is a simple task that can greatly benefit its growth and overall health. By following the step-by-step guide provided in this article, you can ensure that your rex begonia thrives in its new pot. Remember to choose the right time, gather supplies, inspect and prune roots, and provide proper care after repotting. With a little effort, you’ll be rewarded with a stunning rex begonia that will brighten up your indoor space for years to come.