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Northern maidenhair fern · Adiantum pedatum

Why are my Northern maidenhair fern leaves curling?

It is less common for this fern to have curling leaves, which usually points to a struggle with moisture or humidity. Check the soil dampness first to see if the roots are drying out.

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curling leaves on a plant
Photo: Freshclover, CC BY-SA 4.0

Check these first

  1. Touch the soil to see if it feels dry.
  2. Check the humidity levels in the room.
  3. Inspect the fronds for signs of browning or crispiness.

Likely causes

  1. Underwatering

    Most likely

    How to tell: The delicate leaflets curl inward and feel dry or brittle to the touch. The soil surface will feel dry and pull away from the edges of the pot.

    What to do: Water the plant thoroughly until moisture runs out of the drainage holes. Maintain a schedule of watering every 3 to 7 days to keep the soil consistently damp.

  2. Dry air

    Possible

    How to tell: The leaves curl and turn brown at the tips even when the soil is moist. This happens when the air in the room is too dry for this moisture loving plant.

    What to do: Mist the foliage daily with distilled water or use a humidifier nearby. Keeping the humidity above 50 percent will help the fronds stay flat and vibrant.

Curling leaves on 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

Minor curling can happen if you miss a single watering, but it is serious if the entire plant curls and turns brown. New growth naturally unfurls, which is perfectly normal.

Stopping it coming back

Maintain a strict watering rhythm and keep the plant away from heating vents or drafts. Consistent moisture is the key to healthy, flat fronds.

Northern maidenhair fern: curling leaves? 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

Can I save a fern that has curled due to dryness?
Yes, soak the pot in a basin of water for 20 minutes to rehydrate the root ball. Trim off any fronds that remain brown and crispy after a few days.
Does tap water cause curling?
High mineral content in tap water can sometimes cause stress, leading to leaf issues. Using filtered or distilled water is a safer choice for this sensitive fern.

Guides to these causes

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.