Abies grandis

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Abies grandis (Douglas ex D.Don) Lindl.

Pinaceae

Life form: tree
Usage: economic plant

Exposure: shade   6

Moisture: moderately moist

Soil: sand - Soil: gritty-sandy - Soil: loam - Soil: sandy loam - Soil: gritty loam

Arrangement: alternate
Leaves: evergreen

Coniferous leaves: cushion-like base

Division: simple

Shape: not specified
Fruit: cone

 

Inflorescence: not specified

Petals: not specified
Habit: not specified

Canopy: narrowly conical

Taxonomy

Divisio:
Pinophyta
Subdivisio:
Pinophytina
Classis:
Pinopsida
Subclassis:
Pinidae
Ordo:
Pinales

Abies grandis, commonly known as giant fir, grand fir, is a tree.

Naming

Abies grandis was already described and the name validly published by David Don based on a prior description by David Douglas. It was John Lindley, however, who reclassified it into todays valid botanical systematics in 1833.

Taxonomy

Abies grandis is a species in the genus Abies which contains approximately 84 to 93 species and belongs to the family of the Pinaceae (Pine Family). The type species of the genus is Abies alba.

Characteristics

Growth

The comparatively long-lived trees have a narrowly conical canopy and reach heights of 25 to 60 metres. The plants reach a width of 10 to 15 metres.

Wood and Bark

The bark is grey.

Leaves

Abies grandis is evergreen. The dark-green, simple leaves are alternate. They are linear with entire margins. The surface of the leaves is glabrous.

Flowers and Fruits

Abies grandis flowers from May to June. The plants are dioecious, pollination takes places by allogamy through the wind.

The trees produce ornamental brown cones in summer.

Root System

Distribution

Abies grandis is native to British Columbia, the Northwest of the US, the Rocky Mountains and North California.

Cultivation

The trees prefer a shady situation on moderately moist soil. The substrate should be sandy, gritty-sandy, loamy, sandy-loamy or gritty-loamy soil. They tolerate temperatures down to -23°C (USDA zone 6).

Tolerance of special soil conditions

  • medium: calcareous soil

Uses

Suited as specimen plant.

Maintenance and Propagation

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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