Pocket Botanist
Check these first
- Look closely at the underside of the leaves.
- Check if the spots rub off like dust.
- Assess the air flow around the plant.
Likely causes
Rust Fungus
Most likelyHow to tell: You will see dusty orange or brown spots on the leaf blades. These spots can rub off on your fingers.
What to do: Remove and destroy the infected leaves to stop the spread. Improve air circulation around the plant by thinning out dense patches.
Leaf Spot Disease
PossibleHow to tell: Darker, irregular spots appear on the foliage. These often have a yellow halo around them.
What to do: Keep the foliage dry by avoiding overhead watering. Remove any dead plant debris from the ground around the base.
Find out what's wrong with your barren 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
Worry if the spots cover most of the leaf surface and cause the plant to wither. A few minor spots are common in humid weather.
Stopping it coming back
Ensure your brome has plenty of space for air to move through its stems. Water only at the base of the plant to keep leaves dry.
Barren brome: spots? Check yours with a photo
Every plant is a little different. Take a photo of your barren 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.
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
- Is rust fungus harmful to other plants?
- Yes, rust spores can spread to other grasses in your garden. It is best to isolate or treat the affected plant quickly.
- Can I use a fungicide?
- You can, but cultural changes like better airflow and dry leaves are usually more effective for Barren brome. Always follow the label instructions if you choose to spray.
Guides to these causes
More problems with Barren brome
Back to the Barren 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.