Check these first
- Examine the undersides of the leaves closely.
- Look for sticky residue on the stems.
- Check for orange or brown spots on the leaves.
Likely causes
Aphids
Most likelyHow to tell: You will see tiny green or black insects clustered on the stems or undersides of leaves.
What to do: Rinse the plant off with a gentle stream of water to knock the insects away. Use a mild insecticidal soap if the infestation persists.
Rust Fungus
PossibleHow to tell: Small orange or brown pustules appear on the leaves, which can look like a pest infestation.
What to do: Remove the affected leaves immediately to stop the spread. Ensure the plant has good air circulation and avoid getting water on the foliage.
Find out what's wrong with your soft 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
Worry if you see large colonies of insects or if the plant is losing significant leaf mass. It is normal to see an occasional stray bug outdoors.
Stopping it coming back
Keep the plant healthy with proper light and water, and ensure there is good airflow around the leaves.
Soft brome: pests? Check yours with a photo
Every plant is a little different. Take a photo of your soft 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
- Can I use neem oil on my soft brome?
- Yes, neem oil is a safe way to treat most pests on this plant. Apply it in the evening to avoid leaf burn from the sun.
- How do I stop rust from coming back?
- Keep the leaves dry when you water and make sure the plant is in a spot with plenty of fresh air. Rust thrives in damp, stagnant conditions.
Guides to these causes
More problems with soft brome
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.

