Experts and BHG readers answer.
Camellia bush diseases
I'm afraid that we need a more detailed description of the symptoms on your camellias in order to accurately diagnose the problem. Are the branches entirely bare? Is the moss-like covering soft and furry or hard and scalelike? This doesn't sound like any common problem on camellias. They do get a disease called algal leaf spot that can cause fuzzy spots on leaves and twigs, but it is usually most severe on the leaves. Algal leaf spot is most severe in wet conditions and seldom needs control other than improving air circulation. If severe, a spray of basic copper sulfate may be warranted.