Check these first
- Look for fine webbing between the stems.
- Check the undersides of leaves for tiny moving dots.
- Inspect the leaves for small yellow or white stippling.
Likely causes
Spider Mites
Most likelyHow to tell: You see tiny white or red specks moving on the leaves and fine silk webs between the stems.
What to do: Gently wash the fronds with a soft cloth and lukewarm water to remove the mites. Follow up with an application of neem oil or insecticidal soap every 7 days for a month.
Find out what's wrong with your delta 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.
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When to worry
If you see heavy webbing, the infestation is severe and requires immediate treatment. A few mites can be managed quickly with regular cleaning.
Stopping it coming back
Keep the humidity high and the plant well watered, as mites avoid moist environments.
Delta maidenhair fern: pests? Check yours with a photo
Every plant is a little different. Take a photo of your delta 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.
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
- Can I use regular soap to kill the mites?
- Use a mild, fragrance-free dish soap diluted in water. Avoid harsh detergents that might burn the delicate fronds.
- Should I isolate my fern?
- Yes, move it away from other plants immediately to prevent the mites from spreading. Keep it isolated until you are sure the pests are gone.
Guides to these causes
More problems with Delta maidenhair fern
- Why are my Fringed Maidenhair Fern's tips turning brown?
- Why are my maidenhair fern leaves turning yellow?
- Why is my maidenhair fern drooping?
- Why is my maidenhair fern losing its leaves?
- Why are there spots on my Fringed Maidenhair Fern?
- Why is my maidenhair fern suffering from root rot?
- Why is my maidenhair fern looking leggy?
- Why are my maidenhair fern's leaves curling?
Back to the Delta maidenhair 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.

