Red Rocket Maple is a columnar vertical growing tree perfect for the narrow city streets or areas where you don't have a lot of space. It grows to 35' in height, but only 8' wide. Acer ?Red Rocket? is a release from the US National Arboretum. It is one of the hardiest Red Maple cultivars. It will also fit under most utility lines. Also, Fall color is a very intense red.