Koster Colorado spruce
Picea pungens 'Koster'
USDA zones2 to 8
SunHandles full sun to partial sun
WaterHandles moderate to moist soil
Size15 feet tall20+ feet wide
- Growth rate
- Slow
- Habit
- Columnar
- Bloom season
- Spring, summer, autumn, winter
- Soil types
- Sand, loam, clay
- Soil pH
- Acid, neutral
Garden uses
Attracts
Notes
'Koster' Colorado spruce (Picea pungens 'Koster') is a tree for specimen planting, accent, privacy screen, and winter interest. It is hardy to USDA zone 2, or down to -50°F (-46°C). This plant likes full or part sun and average to moist, sandy, loamy, or clay soil. It is not a favorite of deer or rabbits, though hungry ones will eat almost anything. It grows slowly in a columnar shape and stays evergreen all year. Birds visit the tree.
Pairs well with Compactus winged spindle tree, Firewitch cheddar pink, and Stonecrop.