Check these first
- Inspect the undersides of leaves for dark spots or fungal growth.
- Check if the plant is crowded by other vegetation.
- Examine the soil to ensure it is not waterlogged.
Likely causes
Willow Anthracnose
Most likelyHow to tell: You will see irregular dark brown or black spots on the leaves, often accompanied by leaf curling or premature drop. It thrives in cool, wet weather.
What to do: Prune away all infected branches and leaves to stop the spread. Dispose of the clippings in the trash, not your compost pile, to prevent reinfection.
Poor Air Circulation
PossibleHow to tell: Leaves stay wet for too long after rain or watering, creating a perfect environment for fungi. This often happens if the plant is crowded by other shrubs.
What to do: Thin out nearby plants to allow better airflow around the willow. Avoid overhead watering to keep the foliage as dry as possible.
Find out what's wrong with your grey willow
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
If the spots spread rapidly and cause significant defoliation, it is a serious infection. A few isolated spots are common in damp springs.
Stopping it coming back
Keep the area around your willow clean by raking up fallen leaves in autumn. This removes overwintering fungal spores from the soil.
Grey willow: spots? Check yours with a photo
Every plant is a little different. Take a photo of your grey willow 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 save a branch with spots?
- It is best to prune it off. Fungal spores spread easily, so removing the source is the safest way to protect the rest of the tree.
- Will my willow die from anthracnose?
- Usually no, but it can weaken the tree over time. Consistent pruning and good garden hygiene will help it recover.
Guides to these causes
More problems with Grey willow
- Why are there bugs on my Grey willow?
- Why is my Grey willow dropping its leaves?
- Why is my Grey willow drooping?
- Why are my Grey willow's leaves turning yellow?
- Why are my Grey willow's leaf tips turning brown?
- Why is my Salix cinerea suffering from root rot?
- Why is my Salix cinerea growing leggy?
- Why are my Salix cinerea 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.

