Will these spots kill my tree?

Usually no, but it can weaken the plant over time. Prompt pruning helps the tree recover.

Should I use a fungicide?

It is rarely necessary for home gardens. Good pruning and hygiene are much more effective.

Goat willow: spots, causes and fixes

Check these first

Inspect the leaves for dark, irregular spots.
Check if the leaves remain wet for long periods after rain.
Look for signs of fungal growth on the stems.

Likely causes

Willow Anthracnose
Most likely
How to tell: You will see dark brown or black spots that may spread to the stems. Leaves might eventually shrivel and fall off prematurely.
What to do: Prune away all infected branches to stop the fungus from spreading. Clean your shears with rubbing alcohol between cuts. Dispose of the clippings in the trash, not your compost pile.
Poor Air Circulation
Possible
How to tell: The spots appear in dense areas of the canopy where moisture gets trapped. The air feels stagnant around the inner branches.
What to do: Thin out the center of the tree to allow better airflow. Make sure the plant is not crowded by other shrubs or structures. Keep the foliage dry by watering at the base of the plant.

Leaf spots on other plants

Find out what's wrong with your goat 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

If the spots cover more than half the foliage or the stems start dying back, it is time to take serious action. A few spots in late summer are normal as the season ends.

Stopping it coming back

Keep the canopy thinned for airflow and always water at the soil level to keep leaves dry.

Goat willow: spots? Check yours with a photo

Every plant is a little different. Take a photo of your goat 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 plant over time. Prompt pruning helps the tree recover.
Should I use a fungicide?: It is rarely necessary for home gardens. Good pruning and hygiene are much more effective.

Guides to these causes

Anthracnose

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