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Lady fern · Athyrium filix-femina

Why are there spots on my Lady fern?

It is less common for this plant to develop spots, which usually happens due to fungal issues from poor air circulation or water sitting on the fronds. Check the undersides of the leaves for pests first, as they can sometimes mimic spots.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Examine the spots to see if they are fuzzy or dry.
  2. Check if you have been splashing water on the fronds.
  3. Look for tiny insects on the underside of the leaves.

Likely causes

  1. Fungal infection

    Most likely

    How to tell: Small brown or black spots appear on the fronds, often surrounded by a yellow halo. This happens when the foliage stays wet for too long.

    What to do: Remove the affected fronds to stop the spread. Ensure the plant has good airflow and avoid getting water on the leaves when you water the soil.

  2. Leaf scorch

    Possible

    How to tell: Brown, crispy spots appear on the fronds that get the most light. This is a direct reaction to too much sun or drying winds.

    What to do: Move the fern to a shadier spot with no direct sunlight. Keep the plant away from windows that get hot afternoon sun.

Leaf spots on 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 spots are spreading rapidly across all fronds, it is a serious fungal issue. Small, isolated brown tips are usually just a sign of low humidity.

Stopping it coming back

Water at the base of the plant rather than over the top of the fronds. Provide gentle air circulation in the room.

Lady fern: spots? 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

Are these spots a disease?
They are often fungal, caused by moisture trapped on the leaves. Keeping the foliage dry is the best way to prevent them.
Do Lady ferns flower?
Lady ferns are spore bearing plants and do not produce flowers. They reproduce through spores found on the undersides of the fronds.

Guides to these causes

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.