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American royal fern · Osmunda spectabilis

Why is my American royal fern losing its fronds?

It is less common for this fern to drop fronds unless it is experiencing extreme stress from drought or sudden environmental changes. Check the soil moisture first, as this plant requires consistent dampness to stay healthy.

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Check these first

  1. Touch the soil to see if it is bone dry.
  2. Check the humidity levels in your room.
  3. Look for signs of pests like spider mites.

Likely causes

  1. Severe dehydration

    Most likely

    How to tell: The fronds become crispy, turn brown at the edges, and eventually fall off the stem.

    What to do: Soak the entire root ball in a basin of water for 20 minutes to rehydrate the soil. Increase your watering frequency to every 2 to 4 days to keep the soil consistently damp.

  2. Low humidity

    Possible

    How to tell: The tips of the fronds turn brown and the leaflets drop off even when the soil feels moist.

    What to do: Place the fern on a pebble tray filled with water or use a humidifier nearby. Grouping it with other plants can also help create a more humid microclimate.

Leaf drop in other plants

Find out what's wrong with your american royal 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 plant is losing fronds rapidly, it is in distress. It is normal for the oldest, lowest fronds to yellow and drop occasionally as the plant grows.

Stopping it coming back

Maintain a consistent watering schedule and keep the plant away from heating vents or drafts.

American royal fern: leaf drop? Check yours with a photo

Every plant is a little different. Take a photo of your american royal 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

Why are my fronds turning crispy?
Crispy fronds usually mean the air is too dry or the plant has gone too long without water. Increase your watering frequency and humidity.
Is it normal for my fern to lose leaves in winter?
American royal ferns are deciduous in nature and will naturally die back in the winter. If it is late in the season, this is a normal part of their life cycle.

Guides to these causes

More problems with American royal fern

Back to the American royal 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.