Will these spots kill my tree?

Usually no, but it can weaken the tree if it happens every year. Consistent cleanup helps keep the tree healthy.

Should I use a fungicide?

Fungicides are rarely necessary for mature trees. Good sanitation and pruning are much more effective.

White willow: spots, causes and fixes

Check these first

Inspect the leaves for dark, irregular spots.
Check the ground for fallen leaves that might harbor fungus.
Look at the density of the branches.

Likely causes

Willow Anthracnose
Most likely
How to tell: You will see irregular dark brown or black spots on the leaves, often followed by premature leaf drop. It thrives in cool, wet spring weather.
What to do: Prune away infected branches during dry weather to improve airflow. Clean up and destroy all fallen leaves around the base to prevent spores from overwintering.
Poor Air Circulation
Possible
How to tell: Dense foliage that stays wet for long periods encourages fungal growth. If the inner branches are crowded, moisture gets trapped.
What to do: Thin out the canopy by removing crossing or crowded branches. Ensure the tree is not planted too close to buildings or other large trees.

Leaf spots on other plants

Find out what's wrong with your white 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.

When to worry

Small spots are manageable, but if the tree loses most of its leaves in midsummer, it needs immediate attention. A few spots in late autumn are normal as the tree prepares for dormancy.

Stopping it coming back

Keep the area around the tree clear of debris and ensure it has plenty of space for air to move through the branches.

White willow: spots? Check yours with a photo

Every plant is a little different. Take a photo of your white 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.

Get the app · Or check it from a photo now, free

Questions people ask

Will these spots kill my tree?: Usually no, but it can weaken the tree if it happens every year. Consistent cleanup helps keep the tree healthy.
Should I use a fungicide?: Fungicides are rarely necessary for mature trees. Good sanitation and pruning are much more effective.

Guides to these causes

Anthracnose

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