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GENERAL

Origin

:

sub-tropical,

tropical

Humidity

:

very arid, semi-

arid

Propagation :

sowing and

pricking out

Maintenance :

low

CONDITIONS

Urban climate :

resistant

Dessication :

resistant

Stagnant water :

vulnerable

Irrigation

:

low

Salinity/ppm :

high (3500 ppm)

Hardiness

:

-3°C

SHAPE

Type

:

tree, shrub

Height

:

2 m-12 m

Spread

:

3 m-14 m

Foliage

:

semi-evergreen

FLOWER

Colour

:

white

Size

:

1.7 cm

Period

:

March - April

FRUIT

Type of fruit :

pod

Fruit size

:

12 cm

A tree with a flat-topped or, when old, rounded crown and a pronounced trunk, A. etbaica grows

naturally in the coastal foothills of western Saudi Arabia on limestone and granite rocky slopes,

and in the sandy sediments of wadis. It is often predominant in the scrub vegetation of a semi-

desert. It has brown, fissured bark, and bears white flowers on few-flowered heads; branches,

leaves and seed pods are glabrous. The fruit is a purplish-red oblong pod, also shiny and straight.

The tree has several subspecies in Africa which have thorns that are straight, hooked or a mixture

of both. A. etbaica is a good source of firewood and timber. The bark has medicinal properties. As

with other indigenous acacias, and owing to its high drought tolerance, the tree has a landscape

value and can be planted in extensive landscape schemes, where a natural woodland setting is the

objective.

23

Acacia etbaica,

Mimosaceae

Arad Acacia,

arad