Home > Question >

What is causing little grey warts on my Brussels sprouts?

Our Advice:

This is probably oedema, a disorder rather than a disease. It is the result of cool, wet weather and warm soil conditions. The plants take up more water than they need, causing these small clusters of cells, which may turn black as they age. Although these lumps look unsightly, the sprout buttons are still perfectly edible.

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 make the most of your dahlias

How to: New orchids from old

How to care for your lawn in Autumn

How to: Maintenance Pruning

Latest Gardening Videos

---

How do I 'thin' grape bunches?

Planting a Spring Flowering Container

How can I get rid of mushrooms growing in my lawn?

How to Take Care of Spring Flowering Bulbs

Five Essential Tips for Growing Lemons

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

All Videos

Explore Gardens from Around the World

Majorelle Garden
Marrakesh, Morocco

Kenrokuen Garden
Kanazawa, Ishikawa, Japan

Gardens of Versailles
Versailles, France

Medellin Botanical Garden
Medellin, Columbia

Monet's Garden, Giverny
Giverny, France

Dubai Miracle Garden
Dubai, United Arab Emirates