Pocket Botanist
Check these first
- Check for a white powdery substance on leaves.
- Look for dark spots with yellow rings.
- Ensure the tree has good airflow.
Likely causes
Powdery Mildew
Most likelyHow to tell: A white, dusty coating appears on the leaves. It may look like flour has been sprinkled on the foliage.
What to do: Improve air circulation around the tree. Apply a fungicide or a mixture of water and baking soda to the affected leaves.
Fungal Leaf Spot
PossibleHow to tell: Dark or brown spots with yellow halos appear on the leaves. This often happens when leaves stay wet for too long.
What to do: Remove and dispose of infected leaves. Avoid overhead watering to keep the foliage dry.
Find out what's wrong with your chinese elm
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
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When to worry
Mildew is common in humid weather and usually manageable. If spots cover most of the foliage, the tree will struggle to photosynthesize.
Stopping it coming back
Water at the base of the plant to keep leaves dry and ensure the tree is in a well ventilated area.
Chinese elm: spots? Check yours with a photo
Every plant is a little different. Take a photo of your chinese elm 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 all the spotted leaves?
- Remove heavily infected leaves, but leave those with minor spots to keep the tree's energy production going.
- Is this contagious to other plants?
- Yes, fungal spores can spread through the air. Isolate the affected tree until it is healthy again.
Guides to these causes
More problems with Chinese elm
- Why is my Chinese elm dropping its leaves?
- How do I get rid of pests on my Chinese elm?
- Why are my Chinese elm leaves turning yellow?
- Why is my Chinese elm looking leggy?
- Why are my Chinese elm's leaf tips turning brown?
- Why is my Chinese elm drooping?
- How do I fix root rot on my Chinese elm?
- Why are my Chinese elm leaves curling?
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.