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.
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Planning

Difficulty

Easy

Fruiting time

Autumn

Harvesting

Needles have been used in traditional medicine by Native Americans to treat colds, settle stomachs and rheumatic pains.

Propagation

Cuttings

Take softwood or hardwood cuttings.

Special features

Origin

America, North, America

Natural climate

Cool, humid

Environment

Light

Full Sun

Soil moisture

Moist

Soil type

Loam, Clay, Sand

Soil PH preference

Acid, Neutral

Frost hardiness

Hardy

Uses

Notes

Suits being planted in parks and large gardens. It is also grown for the Christmas tree industry.

Personality

Family

Pinaceae

Scent

Mild

Problems

Can be attacked by adeiges, spruce budworm, spruce needle minor, spruce beetle and conifer red spider mite. It can also suffer from canker.
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Knowledge and advice

Search our ever-growing knowledge base to find plants and information. Find out about pests and diseases you should be keeping an eye out for. Watch How to videos or follow step by step guides for tasks in the garden. Free download for your phone or tablet.
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