Order specific edible varieties of amaranth to get the greens. If you don't get 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.
Amaranths do well in hot, high light conditions, producing edible foliage in summer conditions.
Amaranths do best on sunny, raised beds. Plants should be thinned to 6 inches apart. Plants respond to well fertilized soils and irrigation during hot summers. Selection - Harvest greens 5 to 6 weeks after sowing. As with most greens crops, the young succulent leaves are preferred for eating.