Blue spruce, Colorado spruce
Pinaceae (Pine Family)
Wasowski, Sally and Andy
Naturally conical in shape, the stiff, unbending branches of blue spruce grow outward in a dense pattern creating a formal outline. The tree
can become open and poorly-shaped in maturity. Needles are 1/2 - 1 1/4 in., stiff, and vary from green to silver-blue. New growth is light blue. In
the wild, blue spruce grows from 50-100 ft., but it is usually shorter in cultivation.
Cultivated varieties of Blue Spruce include several with dramatic bluish-white and silvery-white foliage. It is a popular Christmas tree
and is also used in shelterbelts.
Image Gallery: 5 photo(s) available
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf Complexity: Simple Leaf:
Green Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May
, WY Native Distribution:
Mts. of w. WY
& e. ID,
s. to AZ
& NM Native Habitat:
Mountain conifer forests
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
CaCO3 Tolerance: High
Soil Description: Moist, rich soils.
Conditions Comments: Due to its naturally symetrical form, pruning is seldom necessary and maintenance is minimal. More drought-tolerant than other Picea spp. Subject to spruce gall aphid and other pests.