Crotalaria capensis is a quick-growing, much-branched shrub or small upright tree. The main stem is slender with drooping branches, the new stems are velvety to the touch. Attractive trifoliate leaves are bright green above and blue-green beneath, and the young growth is silvery blue.The large, very pretty flowers have bright yellow petals. They are borne in lovely long pendulous sprays.

It is a shrub that requires very little maintenance.