Sick looking Camellia

Question

We just bought this house and noticed two trellis trained camellias by our entry. One is doing well but the other is dying, I think. The foliage has thinned out and the stalks have white blotches on them. I have sent pictures, and the last picture is of the healthy camellia just to the side of the unhealthy one. Thank you for any help you can give me.

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Answer 1

The splotches on the trunk might be lichens, which are not harmful in themselves but can indicate that the plant is unhealthy.
https://www.rhs.org.uk/advice/profile?PID=411

Check over the plants for any sign of insects on the leaves. You could also add some fertilizer in case nutrient deficiencies are contributing to the yellowish leaves in the photo:
https://www.gardeningknowhow.com/ornamental/flowers/camellia/camellia-fertilizer-info.htm

Here are some other camellia problems you can look for:
https://www.gardeningknowhow.com/ornamental/flowers/camellia/identifying-and-fixing-problems-with-camellias.htm
http://www.clemson.edu/extension/hgic/pests/plant_pests/shrubs/hgic2053.html