Pocket Botanist
Check these first
- Gently lift the plant out of its pot.
- Smell the roots for a musty or rotting odor.
- Check if the roots are mushy or firm.
Likely causes
Excessive Watering
Most likelyHow to tell: The plant looks sickly, the stem may turn black at the base, and the leaves drop off easily. The roots will smell foul and look slimy.
What to do: Remove the plant from the pot and trim away any black, mushy roots with sterilized scissors. Let the remaining healthy roots air dry for 24 hours before repotting in dry, fresh succulent soil. Do not water for at least one week after repotting.
Water Retaining Soil
Most likelyHow to tell: The soil stays damp for weeks, preventing the roots from breathing. You will notice the plant failing to thrive despite your watering schedule.
What to do: Repot the plant into a specialized cactus and succulent mix that contains plenty of perlite or pumice. Avoid using standard potting soil which holds too much moisture for this species.
Find out what's wrong with your moonstone
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 stem has turned black and mushy all the way to the base, the rot may be too advanced to save the plant. If the stem is still firm, there is a good chance for recovery.
Stopping it coming back
Use a porous pot like terracotta to help the soil dry out faster. Always use a fast draining soil mix and never let the plant sit in a saucer of water.
Moonstone: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your moonstone 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 decayed parts, yes. The key is to ensure the plant is completely dry before you start watering again.
- How often should I water to prevent rot?
- Water every 14 to 21 days, but only if the soil is completely dry. In winter, you can often go much longer between waterings.
More problems with Moonstone
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.