What disease does my hedge have?
My hedge has had the same disease the last 3 years. I would like to identify and then know how to treat.
Certified GKH Gardening Expert
This appears more like insect damage; try looking under leaves to see if you can see a pest.
I would however began treating with Neem Oil. Treat every 3 days for 2 weeks to start. This looks severe and you may need to treat through the season.