The “Green Giant” Thuja is a large fast growing evergreen that has been known to grow up to 3 feet a year. Its natural pyramid form makes an exceptional landscape tree. They can be used for a screen, hedge, windbreak or a single specimen. Green Giant Thuja can grow up to 50-60 feet high & have a 12-20 feet spread. They prefer moist, well drained soil, sun to partial shade, Zone 5-7.