Colorado Spruce, Blue Spruce
Picea pungens 'Jack Corbet'

Family: Pinaceae (py-NAY-see-ee) (Info)
Genus: Picea (PY-see-uh) (Info)
Species: pungens (PUN-gens) (Info)
Cultivar: Jack Corbet

Category:

Shrubs

Conifers

Height:

36-48 in. (90-120 cm)

Spacing:

36-48 in. (90-120 cm)

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Inconspicuous/none

Bloom Time:

N/A

Foliage:

Grown for foliage

Evergreen

Blue-Green

Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Provides winter interest

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

By grafting

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Allow unblemished fruit to ripen; clean and dry seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Rock Island, Illinois

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Mar 9, 2006, conifers from Rock Island, IL (Zone 5b) wrote:

A globular blue form growing 3"-6" per year depending on conditions, locality, and rootstock vigor.