Originated in India and are abundantly cultivated in hot humid regions of Africa, Asia, and the Caribbean. Fast growing, short-lived annual grown for the protein-rich leaves and plant tops. Leaves are also high in calcium and iron. The seeds of vegetable amaranths may be eaten but grain amaranth species are much better sources of seeds. Amaranths like sunny locations; germinating and growing best where day temperatures reach at least 21C (70F).