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Northern maidenhair fern · Adiantum pedatum

Is my Northern maidenhair fern suffering from root rot?

It is less common for this plant to get root rot if you use a well-draining potting mix, but it happens if the roots sit in standing water. Check the soil drainage and pot condition first to ensure the roots can breathe.

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

Check these first

  1. Smell the soil for a foul or swampy odor.
  2. Check if the pot has drainage holes at the bottom.
  3. Gently lift the plant to see if the roots look firm and white.

Likely causes

  1. Overwatering

    Possible

    How to tell: The fronds turn yellow or black and the soil smells sour or musty. The plant may look wilted even though the soil is soaking wet.

    What to do: Remove the plant from its pot and trim away any mushy, black roots with sterilized scissors. Repot the fern into fresh, airy potting mix and ensure the new pot has drainage holes.

  2. Poor Drainage

    Possible

    How to tell: Water sits on top of the soil for a long time after watering. The pot might lack holes or the soil has become too compacted over time.

    What to do: Repot the fern into a container with adequate drainage holes. Use a mix amended with perlite or orchid bark to improve aeration around the roots.

Root rot in other plants

Find out what's wrong with your northern maidenhair 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

Worry if the stems are mushy at the base or if the plant collapses entirely. If the roots are completely brown and slimy, the plant may be too far gone to save.

Stopping it coming back

Always empty the saucer under your pot after watering so the plant never sits in a puddle. Use a light, peaty soil mix that stays damp but never soggy.

Northern maidenhair fern: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your northern maidenhair 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

How do I know if the soil is too wet?
If you press your finger into the soil and it feels like a saturated sponge that does not drain, it is too wet. The soil should feel like a wrung-out cloth.
Can I save a fern with root rot?
If you catch it early and remove all the damaged roots, you have a good chance of recovery. Keep the plant in a bright, warm spot to help it recover after repotting.

More problems with Northern maidenhair fern

Back to the Northern maidenhair 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.