Hi a few months ago my privet hedge which is a couple of years old had all its leaves drooping. I gave them a really good watering and it sorted them out. All has been fine since then, but yesterday I noticed that some of the plants have sections that have gone really yellow. Some sections are yellowy brown. And then there is the odd bit where its few brown spots. Photos below; but is this a problem? I cant imagine water is an issue as it has rained loads.