Picea glauca
Common name: 
White Spruce
Canadian Spruce
Skunk Spruce
PI-see-a GLAW-ka
Native to (or naturalized in) Oregon: 
  • Conifer, evergreen tree, to 80 ft (24 m), tall and narrow in age.  Needles straight, stiff, 15-22 mm long, green to bluish-green, quadrangular in cross-section, 2-5 stomatal bands on each surface; unpleasant odor when crushed.  Cones cylindrical, slender, 3-6 cm long.
  • Sun, but tolerates some shade.  Tough, withstands wind, heat, cold, drought, and crowding; can be used as hedge.  Often found at the arctic tree line.
  • Hardy to USDA Zone 2    Native range from Alaska to Labrador, south into Montana, Minnesota, and New York.
  • A few cultivars:
    • 'Conica'  -  (Dwarf Alberta Spruce)  shrub, dwarf, 10-12 ft (3-4 m), slow growing, become broadly conical with time
    • 'Densata'  -  (P. g. var. densata) evergreen tree, 20-40 ft (6-12 m), symmetrical, compact, slow growing, needles may range from bright green to bluish green
    • 'Pendula'  -  weeping form, branches very pedulous, densely branched, blue-green needles
    • 'Sander's Blue'  -  conical shape, similar to ‘Conica’, slow growing (4 x 2 ft, in 10 years), foliage patchy blue-green
  • glauca: glaucous (covered with a waxy bloom that rubs off readily), the leaves
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  • plant habit

    plant habit

  • plant habit, in a landscape

    plant habit, in a landscape

  • branchlets, needles

    branchlets, needles

  • branchlets and cones

    branchlets and cones

  • needles and cones

    needles and cones

  • branchlets and cone

    branchlets and cone

  • developing and mature cones

    developing and mature cones