Check these first
- Check the drainage holes to ensure they are not blocked.
- Feel the soil to see if it is constantly soggy.
- Gently lift the plant to see if the roots look brown or smell bad.
Likely causes
Overwatering
Most likelyHow to tell: The leaves turn yellow and the plant looks wilted despite the soil being wet. The stems may feel mushy near the base.
What to do: Stop watering immediately and let the top two inches of soil dry out. If the plant does not improve, repot it into fresh, well draining soil and trim away any black, slimy roots.
Poor Drainage
PossibleHow to tell: Water pools at the bottom of the pot or the soil stays wet for more than four days. The plant shows signs of decline despite careful watering.
What to do: Ensure your pot has holes at the bottom. Use a potting mix that includes perlite to help water drain away from the roots.
Find out what's wrong with your scarlet sage
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
Root rot is serious and can kill the plant quickly if not caught. If the base of the stem is mushy, the plant may be too far gone to save.
Stopping it coming back
Always check that the top inch of soil is dry before you water again. Never let the pot sit in a saucer of standing water.
Scarlet sage: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your scarlet sage 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, you can trim the rotten roots and repot the plant in fresh soil. It is a delicate process, but it is possible.
- How often should I water to avoid this?
- Water every 2 to 4 days, but only if the top inch of soil feels dry. Always test the soil with your finger first.
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- Why are my Salvia splendens leaves curling?
Back to the Scarlet sage 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.

