Check these first
- Smell the soil for a foul or swampy odor.
- Gently pull the plant from its pot to inspect the root color.
- Check if the pot has functional drainage holes.
Likely causes
Poor Drainage
Most likelyHow to tell: The soil smells sour or musty and the plant stems appear dark and waterlogged at the base.
What to do: Remove the plant from its pot and trim away any black, mushy roots with sterilized scissors. Repot the plant into fresh, well draining potting mix.
Excessive Watering
Most likelyHow to tell: The leaves droop and turn yellow while the soil remains consistently wet.
What to do: Adjust your watering schedule to wait until the top inch of soil is dry. Always empty the saucer under the pot after watering so the plant does not sit in water.
Find out what's wrong with your wax begonia
The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
If the roots are mostly black and mushy, the plant may be too far gone to save. If you see some firm, white roots, there is a good chance for recovery.
Stopping it coming back
Use a light, airy potting mix and never let your begonia sit in standing water.
Wax Begonia: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your wax begonia and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Can I save a plant with root rot?
- If you catch it early and remove all the damaged roots, the plant can often bounce back. Make sure to use fresh soil when repotting.
- How often should I water to avoid rot?
- Check the soil every 3 to 7 days. Only water when the top inch feels dry to the touch.
More problems with Wax Begonia
- Why is my wax begonia looking so leggy?
- What are these spots on my wax begonia leaves?
- Why is my wax begonia drooping?
- Why are my wax begonia's leaves turning yellow?
- Why are my wax begonia's leaf tips turning brown?
- Why are my wax begonia leaves falling off?
- Why is my wax begonia not blooming?
- How do I get rid of bugs on my wax begonia?
- Why are my wax begonia leaves curling?
This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.

