Check these first
- Feel the soil to see if it is constantly wet.
- Check if the soil drains quickly after rain.
- Inspect the base of the stems for soft or discolored tissue.
Likely causes
Poor Drainage
PossibleHow to tell: The base of the plant looks mushy and the foliage turns yellow or brown. You might notice a sour smell coming from the soil.
What to do: Stop watering immediately to let the soil dry out. If the soil is heavy clay, dig up the plant and amend the area with sand or compost to improve drainage.
Overwatering
PossibleHow to tell: The plant looks stunted and the leaves are dropping off. The soil remains soggy for days after you water.
What to do: Adjust your watering schedule to every 7 to 14 days. Only water when the top 2 inches of soil are completely dry to the touch.
Find out what's wrong with your catmint
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
When to worry
Worry if the stems are black and mushy at the base, as this indicates the rot has spread. If the entire plant is collapsing, it is likely too late to save.
Stopping it coming back
Plant catmint in a sunny spot with well draining soil. Avoid planting in low areas where water tends to pool after rain.
Keep your catmint healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- Can I save a plant with root rot?
- If you catch it early, you can improve drainage and reduce watering. If the roots are already black and slimy, the plant is likely unsalvageable.
- Does catmint need a lot of water?
- No, catmint is drought tolerant once established. It prefers to dry out between waterings.
More problems with Catmint
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.

