Portulaca grandiflora is a succulent flowering plant in the purslane family Portulacaceae, native to southern Brazil, Argentina, and Uruguay and often cultivated in gardens.

The leaves are thick and fleshy, up to 2.5 cm long, arranged alternately or in small clusters.

The flowers are 2.5–3 cm diameter with five petals, variably red, orange, pink, white, and yellow.

The axillary leaves have few to numerous whitish, woolly hairs which are usually shorter than the sheets.

[6] P. grandiflora is one of the few plants that is a C4/CAM intermediate, utilizing both C4 carbon fixation and Crassulacean acid metabolism pathways in different cells for photosynthesis.