Leylandii turning brown

Question

My mum’s leylandii are turning brown from the tips. In one hedge the effect is evenly all over – on the other you can see there has been more die back one one half and it looks flatter and kess leagy than the rest of the hedge.

Answer 1

This could be a fungal infection starting. Extreme cold can be responsible too, but this appears to be an infection starting. I would add wettable sulfur, and a little dolomitic lime to kill off anything in the soil, and recondition it to a proper balance.