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Picea pungens 'Koster'

Koster Blue Spruce

Plant photo of: Picea pungens 'Koster'
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Information by: J.J. Neilson Arboretum        Photographer:

 

Description

Picea pungens 'Koster' is an evergreen shrub or tree. Slow to moderate growth rate. In gardens, reaches 30-60 ft. tall, 10-20 ft. wide. In the wild, can reach 100 ft. tall, 25-35 ft. across. Very stiff, regular, horizontal branches from a broad pyramid. Foliage is a distinctive blue color.

 

Plant Type

Tree, Conifer

Height Range

25-40', 40-60', 60-100'

Width Range

6-12', 12-25'

Flower Color

n/a

Flower Season

n/a

Leaf Color

Blue Green

Bark Color

n/a

Fruit Color

Brown

Fruit Season

Winter, Fall

Sun

Full

Water

Medium

Growth Rate

Slow

Soil Type

Sandy, Clay, Loam, Rocky, Unparticular

Soil Condition

Average, Rich, Poor, Well-drained, Moist, Dry

Soil pH

Acid, Neutral, Basic

Adverse Factors

n/a

Design Styles

Formal, Ranch

Accenting Features

Specimen, Unusual Foliage

Seasonal Interest

n/a

Location Uses

Background, Lawn, Park

Special Uses

Screen

Attracts Wildlife

n/a

Water Saving Tip:

Adjust the water pressure of you irrigation system.

Spray sprinklers work best at 30 pounds per square inch (psi), and gear and impact rotor sprinklers at 40-60 psi.