Pelargonium denticulatum leaves may be dark green, pale along the margins and on the lower surfaces. The midrib and lateral veins along the channels of the narrow leaf lobes are sometimes conspicuous, as the cream-coloured ones in picture.

The haphazard small lobes combined with the angularity of the big ones lend the leaf a curious body shape (Vlok and Schutte-Vlok, 2015; iNaturalist).