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Check these first
- Smell the soil for a foul or swampy odor.
- Check if the pot has functional drainage holes.
- Feel the base of the stems for soft or mushy tissue.
Likely causes
Overwatering
Most likelyHow to tell: The stems feel mushy at the base and the plant looks wilted despite wet soil. You might notice a sour smell coming from the dirt.
What to do: Stop watering immediately and let the top 2 inches of soil dry out completely. If the plant is in a pot, ensure it has drainage holes and dump out any water sitting in the saucer.
Poor Drainage
Most likelyHow to tell: Water pools on the surface for a long time after you water. The soil feels heavy and dense like clay.
What to do: Amend the soil with perlite or coarse sand to improve aeration. If the plant is in a container, repot it into a fresh, well draining potting mix.
Find out what's wrong with your common soapwort
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.
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When to worry
If the stems are black and mushy at the base, the plant may be too far gone to save. It is time to remove the plant to prevent the spread of rot to neighbors.
Stopping it coming back
Always check that the top inch of soil is dry before you add more water. Use a gritty, well draining soil mix to keep roots happy.
Common soapwort: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your common soapwort 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.
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Questions people ask
- Can I save a plant with root rot?
- If the damage is minor, you can trim away the black, mushy roots and repot the plant in fresh soil. If the majority of the root system is mushy, it is best to discard the plant.
- How often should I water my soapwort?
- Water every 3 to 7 days, but only when the top inch of soil feels dry. Adjust your schedule based on the weather and how quickly the soil dries out.
More problems with Common soapwort
- Why does my common soapwort have white spots on its leaves?
- Why is my common soapwort growing so tall and leggy?
- Why is my common soapwort drooping?
- Why are my soapwort leaves turning yellow?
- Why are my soapwort leaf tips turning brown?
- Why is my soapwort not flowering?
- What are the bugs on my soapwort?
- Why are my soapwort leaves curling?
Back to the Common soapwort guide
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.