Skip to content
Pocket Botanist
Get the app

Broad buckler fern · Dryopteris dilatata

Why is my Broad buckler fern losing its fronds?

It is less common for this fern to drop fronds, but it usually happens due to sudden environmental changes or severe stress. Check the location of your plant first to ensure it is not sitting in a drafty area.

Check these first

  1. Look for small brown bumps on the undersides of the fronds.
  2. Check if the plant is near a drafty window or heater.
  3. Inspect the soil to ensure it is not completely dried out.

Likely causes

  1. Temperature Shock

    Most likely

    How to tell: Fronds turn yellow or brown and fall off suddenly after being moved or exposed to a cold draft. The plant may look healthy one day and drop leaves the next.

    What to do: Move the fern to a stable location away from air conditioning vents, heaters, or open windows. Keep the temperature between 60 and 75 degrees Fahrenheit.

  2. Scale Insects

    Possible

    How to tell: You see small, brown, bump like insects on the undersides of the fronds or along the stems. The plant loses vigor and eventually drops fronds as the insects feed.

    What to do: Gently scrape the scale off with a cotton swab dipped in rubbing alcohol. Treat the entire plant with neem oil once a week for 3 weeks to ensure all pests are gone.

Find out what's wrong with your broad buckler 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.

Download on the App StoreGet it on Google Play

When to worry

If the plant is losing many fronds at once, it is a sign of significant stress. It is normal for the oldest, lowest fronds to yellow and drop occasionally as the plant grows.

Stopping it coming back

Avoid moving your fern frequently and keep it in a spot with stable temperatures and indirect light.

Keep your broad buckler fern 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.

Download on the App StoreGet it on Google Play

Get the app · Or check it from a photo now, free

Questions people ask

Is it normal for my fern to lose a few fronds?
Yes, older fronds will eventually yellow and drop off as the plant produces new growth. This is just part of the natural life cycle.
How do I get rid of scale?
Scale can be stubborn, so be persistent. Manual removal with alcohol followed by neem oil applications is the most effective way to clear them out.

More problems with Broad buckler fern

Back to the Broad buckler fern 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.