Green Giant' arborvitae is a large, woody, needled evergreen tree in the cypress family. A hybrid cultivar of the western redcedar and Japanese arborvitae, it was developed in the 1930s in Denmark and introduced to the United States in 1967 when the U.S. National Arboretum received a specimen. This tree does best in a moist, full-sun location with light afternoon shade. It tolerates a wide range of soils. It resists most diseases, insects, periodic droughts, and deer. It does not tolerate salt. It is a low-maintenance landscaping choice due to its hardiness and uniform growth habit that requires little to no pruning to maintain an attractive shape. Green Giant' has a low-branching, dense columnar-pyramidal habit. Dark green sprays of small, glossy, scale-like needles retain their deep green color through the winter. This tree can grow 3 to 4 feet per year in optimal conditions and reach a mature height of 40 to 60 feet and a width of 12 to 18 feet. It has a lifespan of 40 to 60 years.

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