Picea pungens--Colorado Spruce, Blue Spruce
Hardiness Zones: 3 to 7
Height: 60 ft
Spread: 25-35 ft
Type: narrow-leaved evergreen tree
Annual Growth Rate: 12 to 18 inches
Comments: Colorado Spruce is a well-known tree, often present in landscapes
in Michigan. Foliage ranges from a deep green to a pale, silvery blue.
Several of its cultivars have bluish foliage, and can be difficult to
find. The tree does not deserve all of its popularity. It becomes a very tall, blue-green tower, decorated with galls at the branch tips as canker diseases
often disfigure the tree at an early age. The tree should be enjoyed while young
- up to 30 feet tall - but should not be considered permanent.
Colorado Spruce's best quality is its tolerance of road salt - it can
be used near major roads, where many other species cannot. Consider using
Abies concolor (Concolor Fir) or Picea omorika (Serbian Spruce) as a substitute.
Cultivars (click here for more invormation):
'Baby Blueyes' - A dense, upright plant with bluish-gray foliage.
'Columnaris' - A columnar from with short branches.
'Fat Albert' - A full, pyramidal habit is combined with bluish foliage.
'Globosa' - A globe-shaped dwarf with bluish foliage.
'Hoopsii' - Bright blue foliage with an irregular growth habit.
'Iseli Fastigiate' - Described by Iseli Nursery as a "fat, steel-blue cigar."
'Montgomery' - A globe-shaped plant with blue foliage becoming broadly pyramidal with age.
'Pendula' - A weeping trees with blue foliage. Unstaked it can be used as a ground cover.
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