Cedrus atlantica (Atlas Cedar)


Botanical Information

FamilyPineaceae
GenusCedrus
Speciesatlantica
CategoryWoody
TypeTree (evergreen)
Pronunciation

Details

USDA Hardiness Zone6-11
USDA Hardiness Ref.
Canadian Hardiness Zone6–5b
Canada Hardiness Ref.
RHS Hardiness ZoneH4-H5
RHS Hardiness Ref.
Temperature (°C)-23
Temperature (°F)-9
Height25-45 m
Spread10-30 m
GrowthSlow
Flowering PeriodMay

Description and Growing Information

General DescriptionA large tree that is pyramidal when young that spreads out with age with a nice blue colour. The cones are shaped like a barrel and the bark is smooth when young turning more rigid with age.
ID CharacteristicThis tree has a distinct branching habit and form. It also has spirally or rosette needles on the spurs and finally has an upright cone in the shape of a barrel which is typically found at the top of the tree.
ShapePyramidal in shape with typical horizontal branching.
PropagationSeeds show no sign of needing dormancy but pre-chilling or cold stratification at 1-5°C is recommended for three weeks.
CultivationPrefers moist soils but can easily withstand dry sandy soils. Does not transplant easily and must be protected from winter winds due to the lack of hardiness in this species inour zone. It is also very tolerant of urban conditions and can withstand pollution.
PestsTip blight, root rots, black scale and Deodar weevil.
HabitatFound on the slopes of the Atlas Mountains in northern Africa at about 1000-2000 m.
Bark/Stem DescriptionThe bark is grey and smooth for the first 20–30 years of the trees life, at which point it then starts to develop a plate like pattern.
Leaf DescriptionNeedles are 1–2.5 cm long and are slightly curved. The colour varies from silver to blue and the needles are arranged spirally on long shoots and in rosettes on short spur growth.
Flower DescriptionMonoecious and appear from June through September. The male flowers are erect and typically found on the lower portion of the tree while female flowers are green to purple and are found on the lower half of the tree.
Fruit DescriptionCones are found upright along the branches and are 7.5 cm long taking two years to reach maturity. They are bluish-green when young and ripen to brown.
Colour DescriptionA beautiful blue coloured tree that can suffer winter burn giving it an unpleasant brown appearance. The bark is grey and the cones are bluish green at youth and brown at maturity.
Texture DescriptionThe needles are relatively soft to the touch. The bark is smooth when young becoming rough with age. The cones are rather flat and smooth.

Photographs