Fast-growing Green Giant Arborvitae has been touted as a disease-free alternative to other evergreens, particularly in the humid Southeastern United States. When grown in the right conditions, Green Giant Arborvitae can grow up to 4 feet each year, which is an amazing rate of development. With routine trimming, Thuja 'Green Giant' Hedge develops into a dense, thick, and attractive hedge. With its slightly twisted horizontal branching and scale-like dark evergreen foliage, the Green Giant Arborvitae Hedge adds a lovely addition to any outdoor area. The sturdy, tall, and deeply rooted Green Giant Thujas produces an almost disease-free screen or windbreak hedge. When a specimen was provided by a Danish botanist, the U.S. National Arboretum planted it in 1967, officially introducing Thuja 'Green Giant' to the country. It was chosen for its remarkable vitality and growing rate.