Ask a Question forum→Please help identify what is wrong with my laurels...

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Essex, UK
Indiana88
Jun 9, 2020 11:43 AM CST
Hi, over the last year or so we have noticed that the laurels protecting us from a busy road are starting to look very sorry for themselves. They seem to be getting rather sparse, with leaves turning yellow and branches looking bare. Also there is some black sap (that's what it looks like and it's sticky) coming from some of the branches. I've posted some photos (although I didn't really know what to take photos of other than the obvious). There doesn't seem to be anything growing on or eating the plants. Also this started at one side of the row and is spreading right across. I need to know if we are going to lose them as they are currently our only barrier to the very busy main road. Any advice would be gratefully received!

PS - one person has suggested bacterial shot hole, however when I checked the leaves they are not full of holes so not sure if that would rule it out?

Thank you in advance!
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central ohio (Zone 5b)
PlantingOaks
Jun 11, 2020 11:11 AM CST
This isn't really an area I know a lot about, but I'm giving it a shot since you don't have any other answers. Maybe it will catch the attention of someone more knowledgeable.

To me, it looks more like a general 'failure to thrive' than any specific pathogen. Has the weather been unusual this past year? A generic soil test might be next on my list of things to check. pH and things that might be applied to the road spring to mind, but those would probably have affected them in previous years as well. Shrug!
Essex, UK
Indiana88
Jun 11, 2020 11:45 AM CST
Thank you for your reply. I have had someone (on another site) suggest that they may have a capsid bug problem along with the same thing you suggest, just not getting the nutrients they need. We have had the road and cycle path next to them be resurfaced in the last year, as well as a problem with the sewer that runs alongside them. I assume any one, if not all these things could be causing them to feel slightly poorly! I have invested in some fertiliser and will treat the potential bug infestation. Fingers crossed these things work!

Thank you again for your help. Should anyone else have any further responses I would be more than happy to hear them! Smiling

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