This is a medium sized shrub or small tree that glows silvery as a result of their bluish-grey foliage. It is an impressive looking single-stemmed, or many branched shrub or small tree, easily reaching a height of up to 3 m. The trunk is thick and fleshy and has a smooth, green-grey bark. The leaves show very little variation and are thick and fleshy, with a blue-grey colour, with a reddish rim, and the petiole is very short or absent. The star - like flowers are very showy and carried in dense branches above the leaves. They are white to pink in colour and open from Spring to Summer. After pollination, the flowers turn to a papery brown seed, which in itself is quite decorative. It attracts birds. This is the larval host plant for the Common Hairtail butterfly. Named from the Latin 'crassus'= and 'ula'= diminutive referring to the fleshy succulent leaves.