Viburnum Lucidum unknown issue

Hi,

I am a newcomer and novice to gardening but have an issue with my front hedge and was hoping that someone can advise what the problem might be? The hedge seems to be dying off and thinning out and the leaves have marks on them as shown in the pics attached.

Welcome any help and advice!

Thanks,

Cameron

 

This looks like Algal leaf spot, its common in wet years, and can be transfered to Camelias, Rhoddos and others, like what Armandii said, then add a copper drench or other drench fungicide, it it does come back or transfer to other plants, you can treat with rose clear spay, if you catch it early enough.