Picea pungens 'Montgomery' (Montgomery Colorado Spruce)


Michael's Opinion

A popular dwarf conifer often confused with P pungens 'Glauca Globosa' since they are both somewhat rounded and compact in form. Montgomery will grow larger, faster and become a loose pyramid with age: quite noble in maturity and a worthwhile dwarf conifer for the larger landscapes.

Botanical Information

FamilyPinaceae
GenusPicea
Speciespungens
Cultivar'Montgomery'
CategoryWoody
TypeShrub (evergreen)
Pronunciation

Details

USDA Hardiness Zone2–7
USDA Hardiness Ref.
Canadian Hardiness Zone3
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-45C
Temperature (°F)-30 F
Height3 m
Spread1 –1.5 m
GrowthMedium
Flowering PeriodApril

Description and Growing Information

General DescriptionEvergreen conifer growing slowly to 3 m tall and 1.5 m wide, is globe shaped when it is young, turning slightly pyramidal with age; very compact.
ID CharacteristicWhen needles are pulled off they leave a heel, silver-blue-green colour, needles are silver-blue in colour; dwarf conifer.
ShapeDense globular to loose pyramidal shape.
PropagationGrafting or cuttings.
CultivationDoes not grow in shade, requires full sun, a soil pH of 7.0–7.5, is wind tolerant and tolerates drought better than other Picea species and cultivars.
PestsSpider mites, sawfly larvae, spruce gall, aphids, rusts, and caterpillars.
Notable SpecimensThe Gardens of Fanshawe College, London, Ontario, Canada.
HabitatHorticultural origin.
Bark/Stem DescriptionScaly, purple-grey and the shoots are an orange-brown.
Flower/Leaf Bud DescriptionYellow-brown colour; scales are loosely appressed; apex often reflexed.
Leaf DescriptionSilver-blue needles, needles are very stiff, thick, and sharp. 4 sided and 2 -3.5 cm long, they are covered in a glaucous wax, the needles are pointed upwards and are in a radial pattern on the shoots.
Fruit DescriptionForms a broad cone, erect on the branch, the cone scales are waxy, cone tip is blunt and jagged.
Colour DescriptionBlue-green to gold and silver to cream.
Texture DescriptionMedium to coarse.

Photographs