This evergreen, thorn less shrub from Australia has round, thick, leathery gray-green leaf-like phyllodes. This compact shrub or small tree grows slowly to 10 to 15 feet tall and wide, and is reminiscent of a large boxwood. The bright yellow catkin-like flowers appear spring through summer, followed by large flattened seedpods. It performs best in full sun and reflected heat, and needs good drainage. It is cold hardy to 20 F.