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Climbing fern · Lygodium japonicum

Why are my Japanese climbing fern's leaves turning yellow?

Yellowing leaves often point to overwatering or poor drainage. Check the soil moisture and drainage holes before doing anything else.

Not sure it's this? Check a photo of your plant for free

yellow leaves on a plant
Photo: Trio3D, CC BY-SA 4.0

Check these first

  1. Check if the soil is waterlogged or muddy.
  2. Inspect the drainage holes to ensure they are not blocked.
  3. Look for signs of pests on the underside of the leaves.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The leaves turn yellow and feel soft or mushy. The soil stays soggy for days after watering.

    What to do: Allow the excess water to drain completely after each watering. Ensure your pot has drainage holes and use a well draining potting mix.

  2. Nutrient Deficiency

    Possible

    How to tell: Older leaves turn yellow while the plant looks generally pale. This happens if the plant has been in the same soil for a long time.

    What to do: Apply a balanced liquid fertilizer diluted to half strength once a month during the growing season. Do not fertilize if the plant is struggling.

Yellow leaves on other plants

Find out what's wrong with your climbing 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 yellowing affects the entire plant quickly, it could be root rot. A few yellowing leaves at the base of an older plant is normal.

Stopping it coming back

Only water when the soil surface feels slightly dry and ensure the pot drains well.

Climbing fern: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your climbing 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 yellow leaf?
No, yellow leaves will not turn green again. It is best to remove them so the plant can focus energy on new growth.
Is yellowing a sign of too much light?
Yes, direct sun can bleach the leaves and cause them to yellow. Move your fern to a spot with bright indirect light.

More problems with Climbing fern

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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.