Photo by Melody

PlantFiles: Colorado Spruce, Blue Spruce
Picea pungens 'St. Mary's Broom'

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Family: Pinaceae (py-NAY-see-ee) (Info)
Genus: Picea (PY-see-uh) (Info)
Species: pungens (PUN-gens) (Info)
Cultivar: St. Mary's Broom

2 vendors have this plant for sale.

One member has or wants this plant for trade.

Category:
Conifers

Height:
18-24 in. (45-60 cm)

Spacing:
Unknown - Tell us

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 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:
Average Water Needs; Water regularly; do not overwater
Provides winter interest

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:
Unknown - Tell us

Propagation Methods:
By grafting

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By Todd_Boland
Thumbnail #1 of Picea pungens by Todd_Boland

By treelover3
Thumbnail #2 of Picea pungens by treelover3

By conifers
Thumbnail #3 of Picea pungens by conifers

By growin
Thumbnail #4 of Picea pungens by growin

By slyperso1
Thumbnail #5 of Picea pungens by slyperso1

By slyperso1
Thumbnail #6 of Picea pungens by slyperso1

By growin
Thumbnail #7 of Picea pungens by growin

There are a total of 8 photos.
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Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive conifers On Mar 12, 2006, conifers from Rock Island, IL (Zone 5b) wrote:

A very beautiful Miniature selection of Colorado Blue Spruce growing about 1" per year. Plant is globose but with age becomes more spreading than upright. It is said that a 20+ year-old specimen of this cultivar is likely to die for no sudden reason. A marvelous plant, nonetheless.

Positive Todd_Boland On Mar 4, 2004, Todd_Boland from St. John's, NL (Zone 5b) wrote:

A lovely dwarf blue spruce. This cultivar arose as a witch's broom on 'Mongomery', itself a dwarf blue spruce. The blue needles provide year-round interest.

Regional...

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

Rock Island, Illinois
Minneapolis, Minnesota
Belfield, North Dakota
Cincinnati, Ohio



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