Botanical Name: Picea pungens 'Koster'
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Common Name: Koster Blue Spruce  
Plant photo of: Picea pungens 'Koster'
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  • Anatomy

  • Culture

  • Design

Plant Type

Tree, Conifer

 

Height Range

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

 

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

Very Low, Low, Medium

 

Growth Rate

Slow

 

Soil Type

Sandy, 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

Information by: J.J. Neilson Arboretum
Photographer:
  • Description

  • Notes

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.
Planting instructions: Dig hole, insert plant slightly higher than soil grade. Disturb root ball very little. No amendments, just native soil. No fertilizers. Backfill the hole. Mulch top of soil around plant in a 2-3' diameter circle. Water lavishly.