Should I prune the leggy stems?

Yes, you can trim back the longest, weakest stems at the base. This encourages the plant to put energy into new, more compact growth.

Will a leggy fern fill back in?

It will produce new fronds from the base if the light conditions are improved. It will not grow leaves on the bare parts of old stems.

Northern maidenhair fern: leggy growth, causes and fixes

Check these first

Assess the light intensity in your current spot.
Check the soil moisture to ensure it is not drying out too quickly.
Look for signs of crispy edges that indicate low humidity.

Likely causes

Insufficient light
Most likely
How to tell: The stems stretch out and look sparse with large gaps between the fronds. The plant will also lean heavily toward the nearest window.
What to do: Move the pot to a spot with brighter, indirect light. Avoid direct sun, which will burn the delicate leaves, but ensure it gets plenty of ambient brightness.
Low humidity
Possible
How to tell: The fronds look thin and weak, often accompanied by crispy edges. The plant struggles to maintain its lush, full appearance in dry air.
What to do: Place the fern on a pebble tray filled with water to increase local humidity. You can also group it with other plants to create a more humid microclimate.

Leggy growth in 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.

When to worry

It is normal for a fern to lose some density during the winter months when light is scarce. Worry if the stems become so weak they collapse under their own weight.

Stopping it coming back

Keep the plant in consistent, bright indirect light and maintain high humidity levels year round.

Northern maidenhair fern: leggy growth? 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

Should I prune the leggy stems?: Yes, you can trim back the longest, weakest stems at the base. This encourages the plant to put energy into new, more compact growth.
Will a leggy fern fill back in?: It will produce new fronds from the base if the light conditions are improved. It will not grow leaves on the bare parts of old stems.

Why is my Northern maidenhair fern looking leggy?