Open, upright shrub generally reaching 3 metres in height. The ‘leaves’ (phyllodes) are greyish and elliptical. They are usually shorter and broader than those of A. decora, which this species resembles. The bright yellow, globular flower heads are produced in clusters from the bases of the phyllodes. They are followed by straight or slightly curved pods which often have a pale, waxy bloom. The seeds of A. buxifolia lack the extended funicle (the white structure attaching the seed to the pod) of A. decora.