Pocket Botanist
Check these first
- Examine the leaves for orange or dark spots.
- Check if the leaves have been wet for long periods.
- Ensure the plant has enough space for air to circulate.
Likely causes
Rust Fungus
Most likelyHow to tell: Small orange or reddish brown pustules appear on the leaf surface. These are common during periods of high humidity.
What to do: Remove the affected leaves immediately to stop the spread. Improve air circulation around the plant and avoid getting water on the foliage when you irrigate.
Leaf Spot Disease
PossibleHow to tell: Dark brown or black spots with yellow halos appear on the leaves. This usually happens when the plant is kept in poor light with bad airflow.
What to do: Move the plant to a spot with better air movement. Prune away heavily damaged foliage and keep the leaves dry during watering.
Find out what's wrong with your slender false brome
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
Small, isolated spots might be manageable, but if they cover more than half the foliage, the plant is in danger. Treat immediately to prevent total leaf loss.
Stopping it coming back
Water at the base of the plant rather than over the top, and ensure the plant is not crowded by other greenery.
Slender false brome: spots? Check yours with a photo
Every plant is a little different. Take a photo of your slender false brome 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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Or go to pocketbotanist.app/get on your phone
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Questions people ask
- Can I use a fungicide?
- You can use a mild copper based fungicide if the infection is persistent. Always follow the label instructions carefully.
- Is this contagious to my other plants?
- Yes, fungal spores can travel through the air. Isolate the affected plant until the spots are gone.
Guides to these causes
More problems with slender false brome
Back to the slender false brome 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.