Hi, I received 5 3' globe arborvitae plants from a friend in May and 4 do not look very good. I am wondering if they can be saved and if so, what I should do. The only one that is fine is the one I put in a pot, and it doesn't have proper drainage right now. I have been watering every other day, and every day when I can. They aren't totally brown but they are yellowish brown and not getting better. Should I cut them back? What can I try? By the way, the soil is not clay. Thank you in advance for your help; it is greatly appreciated!