Home > Question >

What is causing large black spots on some of my Acer leaves?

Our Advice:

This is a fungal disease called tar spot which is quite common, especially on sycamore. It does not seem to harm the trees so is not worth spraying. Rake up as many leaves as you can and dispose of them. Feed with Growmore as it starts growing next spring

Here are some related questions:

Not what you are looking for?

If you can't find what you are looking for on the website then you can ask one of our experts. To get in touch with us Click Here

We will try to get back to you with an answer as soon as we can.

Here is some more information for you:

Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.

Ask another gardening question:

Learn More About Pests and Diseases

Gardening Projects for September

---

How to protect against birds

How to make the most of your dahlias

How to Store Apples

How to plant through weed-suppressing membrane

Latest Gardening Videos

---

How to Take Care of Spring Flowering Bulbs

When is the best time to prune my bottle brush plant?

Planting a Spring Flowering Container

How do I prune lavender?

How to Grow Orchids

Will tulips grow in the shade?

All Videos

Explore Gardens from Around the World

Aswan Botanical Garden
Aswan, Egypt

Royal Botanic Gardens, Kew
Richmond, United Kingdom

RHS Garden, Wisley
Woking, United Kingdom

Villa d'Este Gardens
Tivoli, Italy

Humble Administrator's Garden
Suzhou, China

The New York Botanical Garden
New York, United States