Picea pungens 'Blue Diamond' – Picea pungens CHRISTMAS BLUE ('Blue Diamond')

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Picea pungens 'Blue Diamond' – Picea pungens CHRISTMAS BLUE ('Blue Diamond')

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Broad pyramidal, medium-sized tree with a dense, very regular crown to about 10 m high and 5 m wide. The bark is greyish brown, later turning blackish grey and deeply scaly. The young twigs are light brown. They form a good background for the intense light blue-grey needles. These are stiff and spiny and 2 to 3 cm long. The long cylindrical cones are green at first and turn yellow-brown when maturing. This cultivar is very suitable for use in modern designs due to its strikingly regular shape. The trade name also refers to a possible use as a Christmas tree. 'Blue Diamond' is easy to propagate and grows well. The tree has few soil requirements, as long as it is sufficiently nutritious and moist, and desires a sunny location. Tolerates slightly more drought than other species and is resistant to urban climate and air pollution.

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Specifications
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Height
8 - 10 m
Width
3-5m
Crown
broad pyramidal, semi-open crown
Bark and branches
twigs light brown, bark black-grey, scaly
Leaf
stiff, stinging needles, intense light blue-grey, 2 - 3 cm, evergreen
Flowers
hanging cylindrical cones, 4 - 10 cm long
Fruits
C.P.F. Kools, Deurne, Netherlands, 1993
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
nutritious, moisturizing, preferably not too acidic
Soil moisture
suitable for dry soil
Paving
tolerates no paving
Winter hardiness zone
4 (-34,4 to -28,9 °C)
Wind resistance
moderate
Other resistances
resistant to frost (WH 1 - 6)
Fauna tree
provides food for birds
Application
tree containers, roof gardens, industrial areas
Shape
clearstem tree, clearstem conifer, specimen conifer
Origin
Breed piramidale, middelgrote boom met een dichte, zeer regelmatige kroon tot circa 10 m hoog en 5 m breed. De bast is grijsbruin, kleurt later zwartgrijs en is diep geschubd. De jonge twijgen zijn lichtbruin. Ze vormen een goede achtergrond voor de intens licht blauwgrijze naalden. Deze zijn stijf en stekelig en 2 tot 3 cm lang. De lange cilindrische kegels zijn eerst groen en kleuren bij rijpen geelbruin. Deze cultivar is vanwege de opvallend regelmatige vorm zeer geschikt voor toepassing in moderne ontwerpen. De handelsaanduiding verwijst tevens naar een mogelijke toepassing als kerstboom. 'Blue Diamond' is gemakkelijk te vermeerderen en goed groeiend. De boom stelt weinig eisen aan de bodem, zolang deze voldoende voedzaam en vochtig is, en verlangt een zonnige standplaats. Verdraagt iets meer droogte dan andere soorten en is bestand tegen stadsklimaat en luchtvervuiling.
Synonyms
Picea pungens 'Christmas Blue'
Clear stem conifer Clear stem tree Specimen conifer acid soil calcareous soil clay soil loamy soil sandy soil tolerates no paving resistant to frost (WH 1 - 6) suitable for shadow suitable for dry soil broad conical 2nd size, between 6 and 12 metres half-open crown bluegreen greygreen average growing provides food for birds non-toxic (usually) Ornamental fruit
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Frequently asked questions
Picea pungens 'Blue Diamond'

Picea pungens 'Blue Diamond' can eventually reach a height of 8 - 10 m, depending on the site and climate conditions.

Picea pungens 'Blue Diamond' is average growing and can eventually reach a height of 8 - 10 m, depending on the site and climate conditions.

The right time to plant Picea pungens 'Blue Diamond' is during the dormancy period. In Western Europe, Picea pungens 'Blue Diamond' with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

Picea pungens 'Blue Diamond' blooms in may.
General