Home > Question >

What causes brown corky lumps on potatoes?

Our Advice:

This is common scab, which also affects beetroot, radishes, swedes and turnips. It is worse on dry, limey soils, so keep the plants well watered, don't add too much lime and choose cultivars which show some resistance, such as 'Accent', 'Arran Pilot', 'Juliette', 'Golden Wonder', 'King Edward', 'Pentland Crown' and 'Pentland Javelin'.

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 January

---

How to pH Test Soil

How to Make a Bird Feeder

How to take Hardwood Cuttings

How to: Maintenance Pruning

Latest Gardening Videos

---

When and how should I prune a jostaberry?

Five Essential Tips for Growing Lemons

How can I stop my roses suffering from wind-rock?

How to Grow Orchids

How do I treat liverwort?

How should I overwinter a potted Canna lily?

All Videos

Explore Gardens from Around the World

Keukenhof
Lisse, Netherlands

Powerscourt Gardens
Enniskerry, Co. Wicklow, Ireland

Royal Botanic Garden Sydney
Sydney, Australia

Pamplemousses Botanical Garden
Pamplemousses, Mauritius

Singapore Botanic Gardens
Singapore

Majorelle Garden
Marrakesh, Morocco