The yellow flower of Aizoon karooicum forms a cup containing a multitude of stamens. The anthers are presented just above the level of the five spreading sepal lobes. These perianth lobes are fused at the base and spreading to reach a diameter of 1 cm.
Flowering happens in autumn and early winter (Vlok and Schutte-Vlok, 2015; Bond and Goldblatt, 1984; iNaturalist; iSpot).