Q.camellia turned brown
After our cold temperatures during late winter and early spring, the leaves on the southern side of our camellia turned brown. This tree does not get any direct sunlight. It has been in this location for 10 years and the only thing different was harsher than normal winter. We didn’t have much snow–just cold and ice. When do I prune off the dead leaves and branches? Should I be feeding it?
It does sound as if your Camellia suffered winter burn.
Below is a few great articles to help you.
https://www.gardeningknowhow.com/ornamental/flowers/camellia/pruning-camellias-how-to-prune-a-camellia-plant.htm
https://www.gardeningknowhow.com/ornamental/flowers/camellia/camellia-cold-damage.htm
https://www.gardeningknowhow.com/ornamental/flowers/camellia/camellia-fertilizer-info.htm