A Colorado blue spruce grows less than a foot or up to 2 feet per year, according to the Arbor Day Foundation. In a planned landscape, it usually tops out under 75 feet.
In a forest, these trees can reach a height of 135 feet. As they have spread (the bottom width) of 10 to 20 feet, gardeners need to plan carefully for the tree in their landscapes to account for growth. These trees prefer full sun to grow well. As an evergreen, they stay green even during the winter, keeping color in the garden even when it is cold. They are not particularly picky about what type of soil they need, though gardeners should not plant them in areas that are too wet. They do well in windy areas, as they have strong roots to keep them in the ground.