Sandys Nursery Online Thuja Green Giant Arborvitae ~Fast Growing Trees~ Quart pot 16+" tall Rapidly-growing, broad pyramidal evergreen tree has medium to dark green foliage. Use: Windbreak or Privacy Screen & Hardiness Zone: 5-8 Privacy Screen-Height: 30-50 feet & Width: 12-16 feet Ships: (1) Quart pot with soil, full & well rooted 16" tall.