There are over 1,000 species of begonia worldwide, each with a varying bloom color or foliage type. Since there is such a great variety, begonias are a popular plant to grow. How do you know when to repot a begonia though?
Moving a begonia to a bigger pot isn’t always an easy decision since begonias like to be somewhat root bound. That said, repotting begonias at some point is necessary to boost soil nutrients and aerate the soil, making your begonia transplant healthier.
When to Repot a Begonia
As mentioned, begonias like to be root bound. Wait to repot until the container is filled with roots. This will be clearly obvious if you gently remove the plant from its pot. If there is still loose soil, allow the begonia to grow more. When the plant’s roots hold all of the soil, it’s time for a transplant.
A begonia transplant may not always be going into a larger container. Sometimes a begonia may wither and fall over. This means the roots have begun to decay and there is too much soil providing a surplus of nutrients (and water), more than the plant needs. In this case, you won’t be moving the begonia to a bigger pot but rather a smaller one.
Now that you know when to repot begonias, it’s time to learn how to repot a begonia.
How to Repot a Begonia
When moving begonia to a bigger pot, select a slightly larger pot for a transplant. Slightly means to choose a pot that is an inch (2.5 cm.), than its previous pot no larger or bigger. It is better to gradually increase the size of the pot as the plant grows rather than plunking it in a huge container.
Before repotting at all, make sure they have a solid root structure. Select a pot with adequate drainage holes. You may even wish to fill the bottom of the container with gravel and then top it with the potting medium.
Use a soilless planting medium that is equal parts peat moss, vermiculite, and perlite. Amend the medium with a couple of tablespoons of ground limestone to help control humidity. Mix together well and moisten with water.
Gently remove the begonia from its container and immediately transplant it into the new medium. Water the begonia transplant and acclimate it in an area out of direct sun.