Love Lies Bleeding Amaranth is one of our favority varieties. It is stunning in the garden and although all parts of the plant is edible, it makes a beautiful cut flower in a floral arrangement. 
Young leaves are used fresh like spinach, while the sprays of seed make a very satisfying gluten-free grain, used like quinoa. Plants grow from 4-8' tall, depending on soil quality. 
Prolific and easily self seeding, harvest seeds before they drop into your garden bed. Amaranth is often eaten as a nutrient dense microgreen.