This is powdery mildew, and you can control it with sprays of Systhane Fungus Fighter from Bayer or 2-in-1 Pest and Disease control from Vitax. Keep the plants well watered, powdery mildew is often a sign that plants are stressed due to a lack of water.
![]() |
Gardening Expert: |
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.
Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.
Lalbagh Botanical Garden
Bangalore, India
Ritsurin Garden
Takamatsu, Japan
Royal Botanic Gardens Victoria
Melbourne, Australia
Majorelle Garden
Marrakesh, Morocco
Medellin Botanical Garden
Medellin, Columbia
Monet's Garden, Giverny
Giverny, France