Amaranthus Seeds - Tricolor70 77 days. Edible. Decorative Plant. Tricolor Amaranthus seeds boast one of the most radiant and eye catching grows available indoors and out. Tricolor Amaranthus seeds are quick to mature into robust 36 48 tall sturdy uprights bursting in tropical red, yellow, and green leaves perfect decorative plant for any living room, office, or patio. Amaranthus is native to the demanding tropics of the world and promises to thrive in similar, humid gardens