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Grey willow · Salix cinerea

Why does my Grey willow have dark spots on its leaves?

Dark spots on your willow often point to a fungal issue known as willow anthracnose. Check the undersides of the leaves for signs of spores or fuzzy growth first.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Inspect the undersides of leaves for dark spots or fungal growth.
  2. Check if the plant is crowded by other vegetation.
  3. Examine the soil to ensure it is not waterlogged.

Likely causes

  1. Willow Anthracnose

    Most likely

    How 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.

  2. Poor Air Circulation

    Possible

    How 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.

Leaf spots on other plants

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.

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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.

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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

Back to the Grey willow guide

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.