Noun
tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward
Source: WordNetIf you have Colorado blue spruce or Black Hills spruce in your windbreaks, have you noticed any browning of needles on the lower branches as the trees reach 15 to 20 years old? Source: Internet
Such species include apple trees, Coho Salmon and Colorado blue spruce. Source: Internet