The leaves of Pelargonium patulum grow on long stalks. They are variously and deeply lobed and palmately veined. Their margins are toothed, sometimes acutely cut.
Reddish zonal marks, similar to those of P. peltatum are sometimes seen on the blue-green to grey-green leaf surfaces, although not on the specimen of the photo that has only red margined leaves (Manning, 2007; iSpot).