Independent trials have shown that Multirose Q4 or Systhane Fungus Fighter both from Bayer appear to give good control. Aim to get a protective layer over the leaves before the disease becomes established. Also, spray the supporting structure to kill any fungal spores lurking there.
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.
Gardens of the Generalife, Alhambra
Granada, Spain
Koishikawa Korakuen Gardens
Tokyo, Japan
Nongnooch Tropical Garden
Pattaya, Thailand
Majorelle Garden
Marrakesh, Morocco
Medellin Botanical Garden
Medellin, Columbia
Monet's Garden, Giverny
Giverny, France