Pocket Botanist
Check these first
- Inspect the leaves for fuzzy or powdery growth.
- Check if the spots are concentrated on the lower branches.
- Examine the soil to ensure it is not staying waterlogged.
Likely causes
Fungal Leaf Spot
Most likelyHow to tell: You will see small brown or black spots, sometimes with a yellow halo, scattered across the foliage. These spots often appear after long periods of rain or high humidity.
What to do: Rake up and dispose of all fallen leaves beneath the tree to prevent spores from overwintering. Improve air circulation by thinning out crowded branches during the dormant season.
Anthracnose
PossibleHow to tell: This causes irregular brown blotches that may lead to leaf curling or premature drop. It is most common in cool, wet springs.
What to do: Prune away infected twigs and branches to reduce the spread. Keep the area around the base of the tree clean of debris throughout the growing season.
Find out what's wrong with your paper birch
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
It is rarely fatal, but you should worry if the tree loses most of its leaves before autumn. Minor spotting is normal in very wet years.
Stopping it coming back
Water at the base of the tree rather than overhead to keep the foliage dry. Maintain good spacing between trees to ensure plenty of airflow.
Paper birch: spots? Check yours with a photo
Every plant is a little different. Take a photo of your paper birch 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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Questions people ask
- Will leaf spots kill my tree?
- Usually no. It is mostly an aesthetic issue, though it can stress the tree if it happens every year.
- Should I use a fungicide?
- Fungicides are rarely necessary for established trees. Focus on cleaning up debris and improving airflow instead.
Guides to these causes
More problems with Paper birch
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.