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Lady fern · Athyrium filix-femina

Why is my Lady fern showing signs of root rot?

Root rot is a common issue for Lady ferns because they love moisture but hate sitting in standing water. Check your pot for drainage holes first to ensure excess water can escape.

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

Check these first

  1. Check if the pot has drainage holes at the bottom.
  2. Feel the soil 2 inches deep to see if it is waterlogged.
  3. Smell the soil for any signs of decay.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The fronds turn yellow or brown and feel mushy, while the soil stays soggy for days. You might also notice a sour, swampy smell coming from the pot.

    What to do: Stop watering immediately and let the top 2 inches of soil dry out. If the plant is in a decorative pot without holes, move it to a nursery pot with drainage.

  2. Heavy soil

    Most likely

    How to tell: The soil stays wet for more than a week after watering, preventing the roots from breathing. The plant looks wilted even though the soil is damp.

    What to do: Repot the fern into a mix of peat moss and perlite for better aeration. Gently trim away any black or slimy roots before placing it in the new, well draining mix.

Root rot in other plants

Find out what's wrong with your lady fern

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 base of the stems is turning black and mushy, the rot is advanced. It is normal for a few old outer fronds to die back as the plant grows.

Stopping it coming back

Always use a fast draining potting mix and empty the saucer under the pot 30 minutes after watering.

Lady fern: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your lady fern 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.

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Questions people ask

Can I save a fern with root rot?
Yes, if you catch it early. Trim the dead roots, repot in fresh soil, and keep the plant in a bright, airy spot.
How often should I water my Lady fern?
Check the soil every 3 to 7 days. Water only when the top inch of soil feels slightly dry to the touch.

More problems with Lady fern

Back to the Lady fern 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.