I have had a cryptomeria in a container on my patio for almost 2 years. When I bought it there were a few brown branches present in the middle of the tree but these have increased substantially in the last year or so mostly on the back part of the tree that is closest to the window. The top part of the tree is healthy and growing but on the bottom back half most of the branches are brown and dried up and look dead. There doesn't seem to be any pest problem, I have it in a north facing sheltered area and it is watered regularly. It was transplanted into a large cedar container in April. Does anyone have any possible solutions to this problem? Should I prune that section back heavily in the fall? Should I turn the container around so the brown section is facing outward from the window?