Q: I just received nine thuja green giants in pots. I live in northern Utah. The temperature has been between 6 and 25 degrees this week, so the ground is frozen. How should I care for my trees?

Towering like a pagoda, with scale-like leaves and roots gripping rocks, this tree stands upright on steep cliffs. Thuja sutchuenensis is an endangered gymnosperm plant unique to China. Originating ...