I found this plant!
Golden Wreath Wattle
(Weed)
Acacia saligna

Golden Wreath Wattle is a shrub or small tree with simple 'leaves' that are green or bluish-green in colour. The younger branches and 'leaves' are drooping in nature with leaves straight or sickle shaped.
This weed has typical wattle golden-yellow flowers borne in small globular clusters.

Native to south-western Western Australia, where it is widespread and often quite common across ye Surf Coast. It is able to form dense stands which out compete native species. This species is relatively short-lived with a life-span of only 10-20 years, except in drier locations where it may persist for longer periods.

Photos courtesy of Neil Tucker.

Plant form
Shrub
Flowering season
Spring, Winter
Flower colour
Yellow
Leaf colour
Both sides of the leaf are one colour
Leaf shape
Falcate, Lanceolate, Linear