Pocket Botanist
Check these first
- Press gently on the base of the stem to feel for softness.
- Stick your finger or a wooden skewer deep into the soil to check for moisture.
- Inspect the drainage hole to see if it is blocked.
Likely causes
Overwatering
Most likelyHow to tell: The leaves feel soft or mushy, and the base of the plant may look translucent or dark.
What to do: Stop watering immediately and let the soil dry out completely. If the rot is advanced, remove the plant from the pot, trim away black or slimy roots, and repot in fresh, well-draining succulent soil.
Poor Drainage
PossibleHow to tell: The soil stays damp for more than a few days after watering.
What to do: Ensure your pot has large drainage holes at the bottom. Use a cactus mix that includes perlite or pumice to help water move through the pot quickly.
Find out what's wrong with your prickly aloe
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 is mushy or the plant is leaning over, the rot has likely reached the core and the plant may not recover.
Stopping it coming back
Always wait until the soil is bone dry before watering again, and never let the pot sit in a saucer of standing water.
Prickly Aloe: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your prickly aloe 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?
- Yes, if you catch it early. Trim the dead roots and repot in dry soil, then wait a week before watering again.
- How often should I water my Thorny Aloe?
- Water every 14 to 30 days, but only when the soil is completely dry throughout the entire pot.
More problems with Prickly Aloe
Back to the Prickly Aloe 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.