Silvery cases is a medium to large evergreen mounding shrub with a flexible branching habit, 4-6 ft. high, 5-8 ft. across. Distinctive flattened foliage is comprised of 2-3 in. long silver-gray phyllodes; showy yellow flowers occur from mid-winter into spring.

This species comes from dry inland plains of Australia where it grows in rocky soils and tolerates heat and drought. It is hardy to 20ºF and well adapted to hot and dry conditions throughout the Inland Empire in sunny aspects. It provides year around foliage accent value in southwestern and Mediterranean style gardens, and intensive display of flowers following winter rains.