The Colorado blue spruce is without a doubt the most planted evergreen in northern Utah, he says. Its beautiful blue color and uniform shape make it desirable. However, it is a large tree and too often planted in such a small area that it quickly outgrows its welcome. In just a few years it can reach heights of 60 to 70 feet with a comparable spread. The difference in color is generally due to simple variations among species, and some varieties have more colors than others.
New growth is usually more colorful than older needles as they tend to fade with age.
If it's a little blue tree you want, consider some of the smaller varieties of blue spruce, he says. Baby Blue Eyes is a good choice. Its deep blue color is striking, its mature height is only 18 to 20 feet and it has a smaller spread of 5 to 10 feet. Bakeri and Fat Albert are other smaller blue spruce. They reach a height of between 15 to 25 feet.