Colorado Blue Spruce Trees

Planting Information, Description

Blue spruce needles (image) truly are bluish. This tree is popular for Christmas.
Blue spruce: yes, it's really blue. David Beaulieu

Plant Taxonomy of Colorado Blue Spruce Trees:

Plant taxonomy classifies Colorado blue spruce trees under the botanical name, Picea pungens. The cultivar is 'Glauca.'

Plant Type:

Colorado blue spruce trees are evergreen trees and conifers.

USDA Plant Hardiness Zones for Colorado Blue Spruce Trees:

Colorado blue spruce trees can be grown in zones 3-7.


Colorado blue spruce typically reaches a height of 30'-60' (it can become taller) and spread out 10'-20'.

Its silvery-blue needles are prickly to the touch and aromatic. Its pyramidal shape makes it a classic choice for a Christmas tree.

Plant Care:

Colorado blue spruce trees don't need to be pruned, but they can be pruned if you wish to promote denser foliage. Prune off half of the fresh growth on each candle (i.e., growing tip) in spring.

Sun and Soil Requirements for Colorado Blue Spruce Trees:

Plant in full sun to partial sun in a location with moist, ​fertile soil. This specimen is not fussy about soil pH.

Uses in Landscaping and in Decorations:

Can be planted in rows to form windbreaks. But they're equally effective as specimen trees.

Not only are they popular as Christmas trees, but their boughs are also useful in various kinds of ​Christmas decorations using greenery. From wreaths to swags to garlands, lovers of tasteful Christmas yard decorations turn to boughs from evergreens such as Picea pungens for raw material for crafts projects.

More on Colorado Blue Spruce Trees:

Colorado blue spruce trees are valuable in deer country, as their prickly texture and strong aroma render them conveniently deer-resistant. In the snowy North, where landscapes can look barren in winter, evergreens such as Colorado blue spruce trees can provide much-needed winter interest.

Speaking of winter, a growing trend is to buy them live (in containers) for indoor Christmas decorating, then plant them outside as landscape plants after the holiday. Dig the hole in the ground for planting well before December, so you won't have to dig through frozen dirt. Bring the excavated dirt inside, to keep it from freezing; you'll need to keep it loose so that you'll have workable dirt with which to fill in around the new specimen after planting it in its hole.

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