Spruce

Alberta Dwarf picea glauca conica

Slow to 7' tall x 4' wide; short, soft needles; pyramidal form; needs shade and moist soil; protect from winter sun!  Zone 3

Blue Weeping picea pungens glauca 'pendula'

Very ornamental blue spruce to 12-20' tall; leader must be staked! Zone 2

Colorado Green/Blue picea pungens 'glauca'

Hi-Graft Globosa picea pungens glauce 'globosa'
Very hardy; grows 50-60' tall x 30' wide; best choice for easy to establish evergreen at elevation.  Zone 2
Spruce on a stick; globe shaped top on a grafted spruce; 4-6' tall x 4-6' wide; hardy.  Zone 3

Iseli's Fastigit picea pungens fastigiata
Columnar spruce to 10' tall x 3' wide; select blue needles; hardy and handsome.  Zone 3