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Peppermint · Mentha piperita

How do I know if my peppermint has root rot?

It is less common for peppermint to get root rot unless it is sitting in soggy, poorly draining soil. Check the drainage holes and soil texture first to ensure water is not pooling at the bottom.

root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Check if the pot has drainage holes.
  2. Smell the soil for a sour or rotten odor.
  3. Gently lift the plant to inspect the root color.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The leaves turn yellow and the plant looks wilted despite the soil being wet. The roots will appear mushy and dark brown.

    What to do: Stop watering immediately and let the top inch of soil dry out. If the rot is severe, repot the plant into fresh, well-draining soil and trim away any black, slimy roots.

  2. Poor Drainage

    Possible

    How to tell: Water sits on the surface of the soil for a long time after watering. The pot lacks holes, trapping moisture.

    What to do: Ensure your pot has drainage holes at the bottom. Use a potting mix that includes perlite to improve aeration.

Find out what's wrong with your peppermint

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

Root rot is serious if the base of the stems feels soft or mushy. If the roots are mostly black and disintegrating, the plant may be beyond saving.

Stopping it coming back

Only water when the top inch of soil feels dry and always empty the saucer after watering.

Keep your peppermint 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.

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Questions people ask

Can I save a plant with root rot?
Yes, if you catch it early. Trim the dead roots, repot in fresh soil, and be careful not to overwater.
Does peppermint need a special pot?
It prefers a pot with good drainage. Plastic or glazed ceramic pots hold moisture longer than terracotta.

More problems with Peppermint

Back to the Peppermint guide

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.