There are many types of amaranth plants, which ones have you seen?
The Amaranthaceae family includes Red Dragonwort, Hollow Lotusherb, Red Amaranth, Lotusherb also known as Shrimp Claw, Amaranthus, Celosia, Cockscomb, Thousand Suns, Purple Cup Amaranth, Red Grass, Prickly Amaranth, Concave-Headed Amaranth, Tuberous Cowslip, Red-Leafed Amaranth, Wrinkled-Fruited Amaranth also known as Green Amaranth, Spiked Cockscomb, Mallard Amaranth, Hemp Cowslip, White Amaranth, and Horse-Shoe Amaranth, and just under twenty species.