Leicestershire, United Kingdom

Can anyone tell me what is causing blotches on the leaves of my Christmas Berry shrub? The blotches apear dark brown, almost black on the top the leaves but are deep red on the underneath.
Some leavese also have large holes as though they've been attacked by somne sort of pest but I cannot see any.
Are the two problems linked? What can I do to solves these problems.

Thanks

On plant Photinia x fraseri

• 3 Mar, 2009