A picture of a Colorado Spruce 'Koster'

Colorado Spruce 'Koster'

Picea pungens (Glauca Group) 'Koster'

Full Sun
Easy care
Moderate watering
Frost Hardy

6a

USDA zone

-23°C

Minimum temperature

Expected size

Height
Spread

12m

Max

4m

8m

Min

2.5m

50 years to reach maturity

More images of Colorado Spruce 'Koster'

A photo of Colorado Spruce 'Koster'
A photo of Colorado Spruce 'Koster'

Colorado Spruce 'Koster' Overview

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.

Common problems with Colorado Spruce 'Koster'

Can be attacked by spruce budworm, spruce needle minor, spruce beetle and conifer red spider mite. It can also suffer from canker (Cytospora).

How to harvest Colorado Spruce 'Koster'

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

How to propagate Colorado Spruce 'Koster'

Seed

Cuttings

Take softwood or hardwood cuttings.

Other uses of Colorado Spruce 'Koster'

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