Q.Treatment For Mildew And Rust On Viburnum Davidi Leaves
Please can you advise me on the attached photo of the leaves as a lot of them have been infected and the problem seems to be getting worse. I have sprayed them with Rose Clearbut is there something else that would be more affective so i dont lose the shrub. Thank you and look forward to hearig from you. Photo attacheds
Certified GKH Gardening Expert
It looks like fungal disease so I'm surprised the Rose Clear hasn't helped. Neem oil may help. Spider mites can also cause stippling, so check for those and treat with a miticide or Neem oil.
These articles should help: