Colorado Spruce 'Koster', Picea pungens (Glauca Group) 'Koster', Picea kosteri 'Glauca', Picea pungens 'Koster Compacta', Picea pungens 'Kosteri', Koster's Blue Spruce
Picea pungens ‘Koster’ (Colorado Spruce) is a medium-sized, evergreen conifer of elegant conical habit with prickly, brilliant silvery-blue foliage. Irregularly shaped in youth, it turns into a very attractive blue tree, lighting up the garden throughout the year. The needles display a metallic blue cast, particularly on the tips of the new growth, and mature to silver through the summer. Slow-growing (12-15 in. per year or 30-37 cm), this striking Colorado Spruce stands out in the landscape. Perfect as a focal point in a sunny border where its silvery-blue foliage will make a pleasing contrast with the other plants.
Blue Spruce belongs to the pine family, Pinaceae, which includes popular conifer trees and shrubs such as cedars, firs, hemlocks, larches, and pines.
| Hardiness |
2 - 8 |
|---|---|
| Heat Zones |
1 - 8 |
| Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, A2, A3 |
| Plant Type | Conifers, Trees |
| Plant Family | Pinaceae |
| Genus | Picea |
| Common names | Blue Spruce |
| Exposure | Full Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 15' (4.6m) |
| Spread | 20' (6.1m) |
| Spacing | 240" (6.1m) |
| Maintenance | Low |
| Water Needs | Average |
| Soil Type | Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Deer, Salt, Rabbit |
| Attracts | Birds |
| Garden Uses | Beds And Borders |
| Garden Styles | Traditional Garden, Informal and Cottage |
| Hardiness |
2 - 8 |
|---|---|
| Heat Zones |
1 - 8 |
| Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, A2, A3 |
| Plant Type | Conifers, Trees |
| Plant Family | Pinaceae |
| Genus | Picea |
| Common names | Blue Spruce |
| Exposure | Full Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 15' (4.6m) |
| Spread | 20' (6.1m) |
| Spacing | 240" (6.1m) |
| Maintenance | Low |
| Water Needs | Average |
| Soil Type | Clay, Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Deer, Salt, Rabbit |
| Attracts | Birds |
| Garden Uses | Beds And Borders |
| Garden Styles | Traditional Garden, Informal and Cottage |
How many Picea pungens ‘Koster’ (Blue Spruce) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Picea pungens ‘Koster’ (Blue Spruce) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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