Camellia Japonica Issues

This is Camellia japonica. In your part of the country, it would be best to provide this plant with at least 6 hours of shade per day. Another issues in this photo is that it appears that the camellia is competing with all the grassy weeds for the water and nutrients in the soil. You might want to consider amending your soil with an amendment that says it is formulated for acid loving plants. Because your plant is not planted in it’s optimum environment, it is not able to fend off diseases and pests. You seem to have a fungal leaf spot problem. Remove and properly dispose of all affected plant parts and litter. Avoid overhead irrigation and splashing water. Use a fertilized formulated for acid loving plants by following the directions on the label.