Emerald Green Arborvitae
We had 15 Emerald Green Arborvitaes planted in our backyard around the first of November. They all looked very good. I was trying to make sure the mulch was moist but we did have some very cold weather where the ground was frozen. Not the trees have yellow/brown areas on them. Are the trees dying? Here are some pictures.
Certified GKH Gardening Expert
This is typical of cold damage. This will usually resolve itself over time. I would add some wettable sulfur to the area to prevent any infection from setting in though.
Thank you, BushDoctor!