Admire the beauty of the 3 gal. 'Green Giant' Arborvitae Holiday Bush. The 'Green Giant' arborvitae is a large, vigorous, fast growing evergreen shrub. Its natural pyramidal shape boasts rich green foliage that darkens or bronzes slightly in the winter. This is an exceptional landscape tree for use as a screen, hedge, or single specimen. 'Green Giant' is also resistant to wind once established and can withstand heavy ice or snow, making it a good choice for a natural windbreak.