A straggly, upright shrub reaching 2.5 metres in height. Leaves are pinnate, consisting of pairs of blue-green, oblong or elliptic leaflets. The long inflorescences consist of clusters of pale-pink to purple ‘pea’ flowers. These are followed by roughly cylindrical pods, which are generally around 4 cm in length. The pods contain a number of hard, cubic seeds. The plant usually seeds profusely.