Colorado Spruce, Blue Spruce 'St. Mary's Broom'

Piceapungens

Family
Pinaceae (py-NAY-see-ee)
Genus
Picea (PY-see-uh)
Species
pungens (PUN-gens)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Provides Winter Interest
Height
18-24 in. (45-60 cm)
Spacing
24-36 in. (60-90 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)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Inconspicuous/none
Bloom Time
N/A
Other Details
Category
Conifers
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By grafting
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Rock Island, Illinois

Minneapolis, Minnesota

Chapel Hill, North Carolina

Belfield, North Dakota

Cincinnati, Ohio

Featured Videos

Gardener's Notes:

3
positives
0
neutral
0
negative
Sort By:
Sort By:
B
Chapel Hill, NC | August 2017 | positive

Beautiful blue evergreen--looks great year round and growing slowly but well in Zone 7b. Surviving a miserably hot and humid summer!

C
Rock Island, IL (Zone 5b) | March 2006 | positive

A very beautiful Miniature selection of Colorado Blue Spruce growing about 1" per year. Plant is globose but with age becomes more sprea...Read More

T
St. John's, NL (Zone 5b) | March 2004 | positive

A lovely dwarf blue spruce. This cultivar arose as a witch's broom on 'Mongomery', itself a dwarf blue spruce. The blue needles provide ...Read More

Featured
Pink-shaded Fern Moth
(Callopistria mollissima)
Peregrine Falcon
(Falco peregrinus)
Featured
Pink-shaded Fern Moth
(Callopistria mollissima)
Peregrine Falcon
(Falco peregrinus)