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      Picea pungens forma glauca
    Colorado Blue Spruce ( Colorado Spruce )
       Evergreen Tree
    
HEIGHT:30 - 60 feet
SPREAD:10 - 20 feet
DISTINCTIONS:Dense, symmetrical, pyramidal form; needles bluish; blue needled seedlings are selected in the nursery when young; many cultivars come from these selections; hardier than green needled types in south central.
LIMITATIONS:Large newly planted trees often slow to get established; susceptible to spruce budworms and spider mites; needles sharp to the touch; pesticides and anti-transpirants dissolve bluish color; needles on newly planted trees turn purplish-brown when dry and under stress. Does not do well near busy roadways or in southeast Alaska; often dies to snowline in the interior.
HARDINESS:SC (Zone 3)
ORIGIN:Rocky Mountains, Colorado, Utah, New Mexico, Wyoming.
CULTIVARS:‘Argentea’ Colorado silver spruce; silvery white. ‘Hoopsii’ Dense growth; pyramidal form; very blue-white color; 40' x 15'.; ‘Koster’ Koster blue spruce; somewhat irregular in habit; silver-blue color. Weeping cultivars available. See entry under Evergreen Shrubs.
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The information for this Evergreen Tree (65) was last updated on: 2011-01-19 17:00:20
      
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