Holly bush has white on leaves. I had a tree taken down, so it was in a lot of shade. Now it gets a lot of sun but these white spots started before that.
Miniature Holly Bush
Certified GKH Gardening Expert
Are the spots powdery in nature. If so, it is is powdery mildew and can be treated with neem oil. Here is more info: https://www.gardeningknowhow.com/problems/get-the-cure-for-powdery-mildew.htm https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
In addition, it could be scale or mealybugs, which can also be treated with neem oil. These articles should help: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm