The Q&A Archives: Colorado & Norway Spruce

Question: Can you give me information of Colorado blue spruce? I just bought some trees around 1-2 foot high about 4 years old. How tall will they get and how fast will they grow a years and can I keep them about 25-30 foot. I have kinda a small space but I like the Colorado blue spruce too much so I will not wory too much or if you think it will not work give me some other ideas. I know Norway spruce is nice and grows at a good rate so what do you suggest -- Colorado or Norway?

Answer: According to Michael Dirr's "Manual of Woody Landscape Plants," Colorado Spruce (Picea pungens) grows at about a foot a year to between 30 to 60 feet tall with a spread of 10 to 20 feet. Norway Spruce (Picea abies) grows a bit faster (possibly two feet a year) to roughly 40 to 60 feet tall with a wider spread of 25 to 30 feet. It can however grow as high as 100 feet. In other words, these are both very large trees. Unfortunately, there is really no way to control the height of these trees by pruning. Taking the long view, I would suggest you select something else if you have a small space. Otherwise, be prepared to remove the tree when it outgrows its space.

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