Pocket Botanist
Check these first
- Look for spots on both the top and bottom of the leaves.
- Check if the spots are spreading to new growth.
- Inspect the tree for signs of poor airflow.
Likely causes
Fungal leaf spot
PossibleHow to tell: Small brown or black spots appear on the leaves, sometimes with a yellow halo.
What to do: Rake up and dispose of all fallen leaves to prevent the fungus from overwintering. Improve air circulation around the tree by thinning out crowded branches.
Anthracnose
PossibleHow to tell: Irregular brown blotches appear on the leaves, often following the veins.
What to do: Prune away heavily infected branches to reduce the amount of fungus present. Ensure the tree is not being watered via overhead sprinklers that keep the leaves wet.
Find out what's wrong with your field 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.
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When to worry
If the spots cover most of the leaf surface and cause early leaf drop, the tree needs treatment. A few spots here and there are usually cosmetic and not a threat to the tree's life.
Stopping it coming back
Keep the area around the base of the tree clean of debris and avoid wetting the foliage when watering.
Field elm: spots? Check yours with a photo
Every plant is a little different. Take a photo of your field 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.
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Or go to pocketbotanist.app/get on your phone
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Questions people ask
- Will leaf spots kill my elm?
- Most leaf spot diseases are cosmetic and will not kill a healthy, mature elm. They are mostly a concern if they cause significant defoliation year after year.
- Should I use a fungicide?
- Fungicides are rarely necessary for mature trees. Good sanitation and proper watering are usually enough to manage the issue.
Guides to these causes
More problems with Field elm
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.