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For more great information on trees that thrive in Michigan, visit the Tree of the Week Archive page.

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Tree of the Week 

A Young Colorado Spruce fieldColorado Spruce

Picea pungens--Colorado Spruce, Blue Spruce 

Hardiness Zones: 3 to 7 
Height: 60 ft
Spread: 25-35 ft
Form: pyramidal 
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. 

Check out more trees from the Tree of the Week Archive.

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