Cypresses - browning

This has been a slowly building problem but its severe on most of my cupresses that are in the ground.
I have others in pots and in a wall bed that dont have this browning.
Im assuming the macrocarpus and leylandi have had it, but if theres a way to save the totem Id love to hear it?

I have others in pots and in a wall bed that dont have this browning.
Im assuming the macrocarpus and leylandi have had it, but if theres a way to save the totem Id love to hear it?

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My only suggestion would be to trim the brown bits off and keep watering, but hopefully a conifer expert will pass by shortly
Can you lollipop a 7ft cypress goldcrest or leylandii? 😅