Hi, 

To our knowledge there isn't a systemic fungicide that is helpful for Cherry Shot Hole disease. Spraying the copper fungicide will help but it won't correct the damage that has already happened. If you continue to spray on a regular schedule, and you can try to prune out the heavily damaged branches, this may help stimulate new growth and the spray should help prevent that new growth from contracting it. 

Most fungicides are not 100% effective so you may still see some holes. There are also leaf crickets that nibble on the leaves of cherry laurel so some of the holes could be from those. They are not detrimental to the plants health so there isn't a need to control them. You could have gotten a large population that will subside as predators find them. 

You can reference our Cherry Laurel diagnostic page for further information. Typically we don't recommend using fungicide as it in excess it can start to be harmful in the soil and to some pollinators, however you could try to knock the shot hole down a bit with the copper. If if seems like you can't get ahead of it, perhaps trying a different plant is better and we can help with recommendations, or you can refer to the list of alternatives on the link provided. 

Let us know if you have further questions. 

Emily

it may be worse in some years than it is in others so if you prune out the heavily damaged foliage and clean up any fallen leaves, that will also help with the spread of the disease. 

If you would ever like to explore a native plant option, we can help guide you. All plants come with their own set of problems but the over planting of cherry laurel can contribute to the wide spread issues with them. 

On Monday, June 10, 2024, 2:30 PM, Ask Extension <<personal data hidden>> wrote:

you're welcome