Our holly bush has a white grainy coating on the stems and branches. Could this be a type of fungus? It's not on the entire bush. Thank you for your reply.
Certified GKH Gardening Expert
It is possible that it is scale or mealybugs. I like to treat both with neem oil. It is very effective and safe. These articles will help: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm