GREEN GIANT 1-2 ft. in 1 gallon container

Growth Rate: Fast (3-5 feet per year)
Hardiness Range: 5-9
Mature Height: 30′-40′
Mature Spread: 6′-12′
Sunlight: Full to partial
Recommended Spacing for Privacy: 5 ft apart
Bottanical Name: Thuja x ‘Green Giant

Green Giant (Thuja x 'Green Giant'), Grows to 40 feet with a broad pyramidal habit. Thuja Green Giant is deer-resistant, fast growing, aromatic, and is used for wind breaks, Christmas trees, or as a distinctive specimen. Its growth habits are similar to Leylands. Once established, expect about 3 feet of growth per year. Thuja Green Giants do great in the South, but have a farther reach North than Leylands. They tend to bronze a bit in the winter, but green back beautifully in the Spring. Landscape Architects are beginning to use Thuja Green Giants instead of Leylands because they are resistant to the fungus (Cerosporidium sequoiae) that is damaging Leylands.

Plant 5 to 6 feet apart for a really fast privacy screen, otherwise 10-12 feet apart. Most vigorous growth will be in full sun, but it will also perform well in light shade. Eventually reaches 30 to 50 feet tall.

http://www.bulbsnblooms.com/green-giant-arborvitae-1212.html