Purslane

Purslane is often described as a plant of the Old World tropics and subtropics, but assigning it one precise homeland would overstate the evidence. Its small seeds travel readily in soil, and people have gathered, cultivated, and carried the plant since antiquity. As a result, botanists still debate which populations are truly wild and which descend from plants moved by humans.

Archaeological finds show that purslane was used in ancient Mediterranean and Near Eastern societies. It also has a long history as a food and medicinal plant across South and Central Asia. Selection under cultivation produced forms with larger leaves, thicker stems, and a more upright habit than many weedy populations, though cultivated and wild-looking purslane still belong to a complicated, variable species complex.

Over centuries, purslane spread through trade, farming, and disturbed ground. It became familiar around the Mediterranean, in the Middle East, across Asia, and in Africa. Its history in the Americas is less straightforward: purslane was certainly dispersed widely after European contact, but archaeological and botanical evidence has also prompted debate over whether related or early purslane populations were present before then.

Today purslane grows on nearly every inhabited continent. It is cultivated as a market green in Mexico, the Mediterranean, the Middle East, India, China, and parts of California, while elsewhere it appears spontaneously in gardens and fields. That dual identity—as valued vegetable and persistent weed—is central to its remarkable global story.