Thorn Trees of Africa

Thorn tree - watercolour on Ashrad 300gsm - 11" x 7.5" - Maree
Umbrella Thorn {Acacia tortilis}

There are few more striking symbols of Africa than a thorn tree - its gnarled branches, graceful form, jagged thorns and abundant blooms, in many ways reflecting the paradoxes of the continent.

This Umbrella Thorn (Acacia tortilis) stands in one corner of my garden and offers a safe haven for many birds who seek a safe place to nest.

Umbrella Thorn Acacia {Acacia tortilis}
The Umbrella Thorn Acacia grows in Africa. There are over 700 species of the Acacia in Africa. Umbrella Thorn Acacia is one of the most recognizable trees of the African savanna. It grows in sand dunes and rocky grounds of Africa's grasslands. Acacias grow in areas with annual rainfall as low as 4cm. This tree can survive in 50°C temperatures during the day, and freezing temperatures at nights. The savanna that the Acacias live in is hot and dry in the respective summer of the Southern Hemisphere although at night the temperature can go below -18°C. During the winter months the savanna gets a lot of rain. The Umbrella Thorn grows up to 20 meters high and has a spreading, flat-tapped crown that gives it its name.

The structure of umbrella thorn trees preserves soil moisture by having a high proportion above-ground woody mass and low amount of foliage and the utmost top tips are a favourite grazing spot for Giraffes.


(Info from Wikipedia)