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GENERAL

Origin

:

Mediterranean,

sub-Mediterranean,

sub-tropical

Humidity

:

very arid, semi-

arid

Propagation :

sowing and

pricking out,

cuttings

Maintenance :

low

CONDITIONS

Urban climate :

vulnerable

Dessication :

resistant

Stagnant water :

vulnerable

Irrigation

:

medium

Salinity/ppm :

moderate (2000

ppm)

Hardiness

:

-25°C

SHAPE

Type

:

tree

Height

:

10 m-20 m

Foliage

:

evergreen

FLOWER

Colour

:

pale yellow

Size

:

0.2 cm

Period

:

March - May

FRUIT

Type of fruit :

cones

Fruit size

:

3 cm

This evergreen conifer, the form of which varies from pyramidal to sometimes rounded, reaches

a height of 10 to 20 m. It is indigenous to the southwest of the USA, principally Arizona, and

Central America. It is found naturally on dry, sterile, rocky mountain slopes with poor soils and

on valley sides. The colour of the scale-like foliage ranges from light green to silvery blue. The

branches are dense and horizontal to the stem. Young branches have a cherry-red bark; the older

bark is deeply furrowed and dark brown. Tolerant of full sun, heat and wind, with a moderate

growth rate, this tree is drought-resistant when established, but thrives with a thorough soaking

every month or so. It is not recommended for soils with a high water table. Sometimes planted as

a windbreak, C. arizonica becomes open and unkempt as it matures, and is thus less effective as

a barrier. It is also susceptible to insect attack, such as cypress bark beetle, when older or under

stress. Subject to leaf scorch when grown as an ornamental in an exposed location. Often planted

for a woodland or forest effect in parks, it is also useful as a space definer. Not often seen in Ar-

riyadh, the Arizona Cypress generally requires little maintenance.

121

Cupressus arizonica,

Cupressaceae

Arizona Cypress