These are evergreen trees that are often used for screening. The most commonly used are Green Giants and Emerald Greens. The Green Giants are deer resistant, they are quick growers, and they get to a size of about 12-15 feet wide and 30-40 feet tall. Emerald Greens are not deer resistant, and they are shaped more like a pencil, getting only 3-4 ft wide and 10-15 ft tall.