Check these first
- Touch the soil to see if it is soggy.
- Check the location to ensure it is not in direct sun.
- Inspect the undersides of leaves for scale insects.
Likely causes
Overwatering
Most likelyHow to tell: The fronds feel soft or mushy and the soil stays soggy for days.
What to do: Allow the top inch of soil to dry out before watering again. Ensure your pot has drainage holes so excess water can escape freely.
Too much direct sun
Most likelyHow to tell: The yellowing appears on the fronds most exposed to harsh light.
What to do: Move your fern to a spot with partial or full shade. Keep it away from windows where direct sun hits the foliage.
Find out what's wrong with your black spleenwort
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
It is normal for the oldest, lowest fronds to yellow and die back as the plant grows. Worry if the yellowing spreads rapidly across the entire plant.
Stopping it coming back
Maintain a consistent watering schedule and keep the plant in a shaded, humid spot.
Black spleenwort: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your black spleenwort 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Should I cut off the yellow fronds?
- Yes, you can trim them back to the base with clean scissors. This keeps the plant looking tidy and helps it focus energy on new growth.
- Can low humidity cause yellowing?
- Yes, dry air can stress the plant. Try misting the fronds or placing the pot on a tray of pebbles and water.
More problems with Black spleenwort
- Why are my Black spleenwort's frond tips turning brown?
- How do I fix root rot on my Black spleenwort?
- What are these brown bumps on my Black spleenwort?
- Why is my Black spleenwort drooping?
- Why is my Black spleenwort losing its leaves?
- Why is my Black spleenwort looking leggy?
- Why are my Black spleenwort leaves curling?
Back to the Black spleenwort 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.

