Drosanthemum quadratum is a succulent plant in the ice plant family, Aizoaceae, indigenous to the Overberg region of the Western Cape Province, South Africa.

The young flowers have erect stamens and staminodes forming a central cone.

Like many other Drosanthemum species, the pedicel has a layer of cork within it, especially near the base.

[1][2][3] This species is endemic to the Western Cape Province, South Africa.

It occurs in quartz-patches, with underlying clay, in rocky renosterveld vegetation between Bredasdorp, Swellendam and Riversdale, in the Overberg region.