Aloe pruinosa is a maculate aloe with a much branched inflorescence that only occurs in a limited thorn-bush area in KwaZulu-Natal. The green or purplish upper leaf surface has scattered H-shaped white markings. On the lower surface of the leaf there are more spots than above, oval in shape. The spots are sometimes arranged in linear bands along the leaf surface.

The flowers are pink or red with a grey dusty bloom. In the great variety of appearances presented by the Aloe genus, this is one that is more interesting than pretty when in flower (Jeppe, 1969).