Pelargonium griseum has small leaves that are grey and deeply lobed into tiny ericoid, but woolly little fingers. The leaves resemble those of P. abrotanifolium but are shorter and closer together.

The stems of the bigger shrublets, about 30 cm tall and spreading, are gnarled, have many old branches on the bigger specimens. The whorls of young leaves grow on the old and new stems alike.

The flower of the dassiebuchu or sinkingsbos (Afrikaans), as this plant is commonly known, is small but strikingly attractive. The two upper petals are light pink with intricate dark pink line patterns and square to concave upper edges. The lower petals have darker brick-red markings and recurve, hiding partly from view. The stamens are long, protruding in an upturned cluster of creamy filaments and orange anthers

This is a Karoo species commonly growing on hilly slopes (Shearing and Van Heerden, 2008).