Colorado Spruce 'Koster'
Picea pungens (Glauca Group) 'Koster'
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A cultivar of the native spruce to Canada and the USA it is a popular choice for an ornamental tree around the world for it's dense horizontal branches and blue coloured needles as it makes a small to medium sized tree.
Needles have been used in traditional medicine by Native Americans to treat colds, settle stomachs and rheumatic pains.
Take softwood or hardwood cuttings.
America, North, America
Loam, Clay, Sand
Soil PH preference
Suits being planted in parks and large gardens. It is also grown for the Christmas tree industry.
Can be attacked by adeiges, spruce budworm, spruce needle minor, spruce beetle and conifer red spider mite. It can also suffer from canker.