Holly Bushes Look Like White Fungus Under All Leaves Each Year

Question

How do you get rid of it?

Answer 1

It is actually probably mealybugs. They look like white, cottony puffs or patches and are found under the leaves. I like to use neem oil on pests like these. It is organic, safe for people, pets and beneficial bugs and very effective. Here is some more information that will help you:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm