Do I need to use a fungicide?

Usually, cleaning up debris and improving airflow is enough. Fungicides are rarely needed unless the infection is severe.

Are these spots contagious to other plants?

Most magnolia leaf spots are specific to the tree. However, it is always good practice to keep your garden clean.

What are these spots on my magnolia leaves? Causes and fixes

Check these first

Look at the underside of the leaves for fuzzy growth.
Check if the spots are spreading to new growth.
Clear away all debris from the base of the tree.

Likely causes

Fungal leaf spot
Most likely
How to tell: You will see small, dark brown or black spots with yellow halos on the leaves. These spots often appear after long periods of rain or high humidity.
What to do: Remove and dispose of any fallen leaves from around the base of the tree to prevent spores from spreading. Improve air circulation by pruning crowded branches.
Algal leaf spot
Most likely
How to tell: This appears as raised, fuzzy, or velvety patches that are greenish or reddish brown. It is common in very humid climates.
What to do: Prune away heavily affected branches to increase airflow. Keep the foliage dry by watering at the base of the tree rather than overhead.

Leaf spots on other plants

Find out what's wrong with your magnolia

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 amounts of spotting are common and rarely kill the tree. Worry if the spots cover most of the leaves and cause premature defoliation.

Stopping it coming back

Water the soil directly and avoid wetting the leaves. Keep the area under the tree clean of fallen foliage.

Magnolia: spots? Check yours with a photo

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

Do I need to use a fungicide?: Usually, cleaning up debris and improving airflow is enough. Fungicides are rarely needed unless the infection is severe.
Are these spots contagious to other plants?: Most magnolia leaf spots are specific to the tree. However, it is always good practice to keep your garden clean.

Guides to these causes

Leaf Spot

What are these spots on my magnolia leaves?

Check these first

Not sure what's wrong with your magnolia?