Picea pungens 'Thume'
Colorado Spruce
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Colorado Spruce (Picea pungens 'Thume') - Description
The Colorado spruce, blue spruce, green spruce white spruce, or Colorado blue spruce (Picea pungens), is a species of spruce tree native to the Rocky Mountains of the United States, from Colorado to Wyoming, and introduced as a popular ornamental tree found far beyond its native range.
Colorado Spruce (Picea pungens 'Thume') - Growth
Grows best in full sun.
Colorado Spruce (Picea pungens 'Thume') - Planting
Sow seeds in containers in a cold frame in spring.
Colorado Spruce (Picea pungens 'Thume') - Pest
In winter, check for green aphids amongst the needles. Pine needle scale can also be a problem. In the Rocky Mountain states, spider mites and tussock moths can infest Spruces. Cooley Spruce gall adelgid is an insect similar to the aphid that feeds on the tips of branches of Spruces and causes a green gall to form. The galls gradually turn color to a light purplish tan.
Colorado Spruce (Picea pungens 'Thume') - Interesting facts
Many species of Picea look very similar to Firs; however, the cones of Picea hang from the branches as opposed to upright on the branch as Firs do.
Colorado Spruce (Picea pungens 'Thume') - Soil and irrigation
Once established Spruces need very little water except for Brewer's Weeping Spruce (P. breweriana), which needs regular water.
