Cedrus atlantica v. glauca
Overview
The Blue Atlas Cedar is a striking evergreen conifer native to the Atlas Mountains of northern Africa. Renowned for its silvery-blue needles, broad branching structure, and stately form, it is among the most recognizable ornamental conifers planted in arboretums, parks, and large landscapes.
A blue-needled variety of Atlas Cedar (Cedrus atlantica), the Blue Atlas Cedar is valued for its year-round color and distinctive appearance. Mature specimens often become landscape landmarks, developing broad horizontal branches and an impressive canopy that can persist for generations.
Identification
Needles
- Evergreen needles borne in dense clusters
- Silvery-blue to blue-green in color
- Typically ½ to 1 inch long
- Stiff but not sharply pointed
- Remain on the tree year-round
Bark
- Gray to dark gray bark
- Smooth on young trees
- Develops ridges and furrows with age
Cones
- Upright barrel-shaped cones
- Typically 2 to 4 inches long
- Green when young, maturing to brown
- Disintegrate on the tree to release seeds
Size
- Typically grows 40 to 60 feet tall
- Can exceed 80 feet under favorable conditions
- Mature spread of 30 to 50 feet
Growth Form
- Pyramidal when young
- Broadens with age
- Develops strong horizontal branching
- Mature trees often have a dramatic, sculptural appearance
Native Range
Atlas Cedar is native to the Atlas Mountains of Morocco and Algeria in northwestern Africa. The blue-needled variety, Cedrus atlantica var. glauca, was selected and cultivated for its distinctive foliage color.
Within the Marshall University Arboretum, Blue Atlas Cedar is classified as a Non-Native species.
Ecology and Wildlife Value
Although not native to North America, Blue Atlas Cedar provides many of the environmental benefits associated with large evergreen trees.
Its dense canopy provides:
- Year-round shelter for birds
- Nesting opportunities
- Protection from winter weather
- Shade and cooling benefits
The tree also contributes structure, biodiversity, and visual interest within the landscape.
Human Uses and Cultural Significance
Blue Atlas Cedar is widely regarded as one of the most beautiful ornamental conifers in cultivation.
The species is valued for:
- Distinctive blue foliage
- Broad architectural form
- Longevity
- Drought tolerance
- Year-round ornamental appeal
Atlas Cedar wood has historically been valued for its durability and aromatic qualities. In modern landscapes, however, the tree is planted primarily for its ornamental character and commanding presence.
Numerous cultivars have been developed, including weeping and dwarf forms.
Blue Atlas Cedar at Marshall University
Blue Atlas Cedar contributes year-round color and texture to the Marshall University Arboretum. Its blue foliage provides a striking contrast to the greens of surrounding trees, while its broad branching habit makes it one of the most visually distinctive conifers on campus.
As a non-native species, Blue Atlas Cedar helps illustrate the global diversity of trees represented within the arboretum and demonstrates how trees from different continents contribute to the educational and aesthetic value of the campus landscape.
Quick Facts
Common Name: Blue Atlas Cedar
Scientific Name: Cedrus atlantica var. glauca
Family: Pinaceae
Native Region: Non-Native
Mature Height: 40-60 feet (occasionally 80+ feet)
Mature Spread: 30-50 feet
Growth Rate: Moderate
Sun Requirements: Full Sun
Soil Preferences: Well-drained soils; tolerant of drought once established
USDA Hardiness Zones: 6-9
Bloom Period: Fall pollen production
Fruit/Seed: Upright cones that disintegrate on the tree at maturity
Wildlife Value: Provides year-round shelter, nesting habitat, and environmental benefits associated with evergreen trees
Notable Characteristics: Silvery-blue needles, broad branching structure, and impressive ornamental form