Home > Question >

What's causing the white dust on the leaves of my Cox apple tree?

Our Advice:

From your description it sounds like apple tree has powdery mildew. Spraying with SB Plant invigourator plus 5 grams of baking powder per litre of spray solution at weekly intervals to control this problem. Powdery mildew is often a sign of water stress in plants, so make sure you keep the plant well watered in dry weather.

Gardening Expert: Steve Bradley

This video may also help:

Here are some related questions:

We could not find any 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 May

---

How to: New orchids from old

How to take Dahlia cuttings

How to Root Carnations

How to make a Herb Planter

Latest Gardening Videos

---

Growing Begonias

Rooting Cuttings

Potting Cacti

Maintaining an Established Garden & Growing Plants in Shade

Taking and Growing Chrysanthemum Cuttings

Growing Busy Lizzies (Impatiens)

All Videos

Explore Gardens from Around the World

Powerscourt Gardens
Enniskerry, Co. Wicklow, Ireland

Villa d'Este Gardens
Tivoli, Italy

Singapore Botanic Gardens
Singapore

Keukenhof
Lisse, Netherlands

Royal Botanic Garden Sydney
Sydney, Australia

Monet's Garden, Giverny
Giverny, France