This shrub has a solitary trunk with spreading greyish branches that form a rounded habit. It has divided fern-like mid green leaves and the yellow ball-shaped flowers appear in clusters towards the end of the branches during early spring.

Hardiness zones 8 to 10 

Acacia cardiophylla is naturally found in Australia in the Wyalong area on the western slopes and plains of New South Wales and is cultivated from Alice Springs in central Australia to Tasmania.
 
It grows in well drained moderately fertile sandy to gravelly soils that are tending acidic and prefers an open sunny position and is drought or high temperatures and light frost tolerant.

The Wyalong Wattle is grown for its masses of flowers and its small rounded crown. It is planted in parks and gardens along borders as a quick screen or as a specimen in a new garden. It is also used in roadside plantings or woodland settings. It is suitable for coastal or inland regions establishing from seed in 2 to 3 years tolerating a wide range of conditions. ID 7

Acacia (a-KAY-see-a) cardiophylla (car-di-o-FIL-la)  

Fabaceae (fab-AY-see-ee)
subfamily Mimosoideae 
Wattles