White Powder Curling Laurel Leaves

Question

My established laurel hedge is showing a white powderish substance only on the new growth and causing the leaves to curl and go discolored. I have managed to prune the majority and have left the healthy ones.

Answer 1

It sounds like powdery mildew. These articles will help you:
https://www.gardeningknowhow.com/problems/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm