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Ebony Spleenwort · Asplenium platyneuron

Why are there spots on my Ebony Spleenwort?

It is less common for this fern to develop spots, which usually points to fungal issues or improper watering. Check your fronds for moisture buildup or pests first.

spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Inspect the undersides of the fronds for small brown bumps.
  2. Check if the foliage has been sitting wet after watering.
  3. Ensure the plant is not crowded by other foliage.

Likely causes

  1. Fungal leaf spot

    Possible

    How to tell: You will see small, dark brown or black circles with yellow halos on the fronds. These often appear after the foliage stays wet for too long.

    What to do: Remove the affected fronds immediately to stop the spread. Ensure you water only at the soil level and keep the leaves dry. Increase airflow around the plant to help it stay healthy.

  2. Scale insects

    Possible

    How to tell: Look for small, hard brown bumps on the undersides of the fronds that look like tiny shields. These insects suck sap and leave behind sticky residue or discolored spots.

    What to do: Gently scrape the bumps off with a cotton swab dipped in rubbing alcohol. If the infestation is heavy, treat the plant with insecticidal soap every 7 days. Keep checking the undersides of leaves weekly.

Find out what's wrong with your ebony spleenwort

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 spots are spreading rapidly across multiple fronds. A single old frond with a spot is usually just natural aging.

Stopping it coming back

Water the soil directly rather than overhead to keep the fronds dry. Provide good air circulation to prevent fungal growth.

Keep your ebony spleenwort 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 mist my fern to get rid of spots?
No, misting actually encourages fungal spots by keeping the fronds damp. It is better to use a pebble tray for humidity.
Are these spots contagious?
Yes, fungal spores and scale insects can easily move to nearby plants. Isolate your fern until you are sure the problem is gone.

More problems with Ebony Spleenwort

Back to the Ebony Spleenwort 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.