If you do not find Amaranth gangeticus , get one of the edible varieties. This warm season crop grows from 2 to 4 feet or more. The grain varieties are usually erect. Amaranth greens are grown like other green crops. They do well in hot, high light conditions, producing edible foliage in summer conditions.
Amaranths do best on sunny, raised beds.
Thin plants to 6 inches apart. Plants respond to well fertilized soils and irrigation during hot summers. Harvest greens 5 to 6 weeks after sowing. As with most greens crops, young succulent leaves are preferred for eating. Greens are tied in bunches and sold in cartons by the bunch or by the pound.