Сommon amaranth (Amaranthus retroflexus L.)

Family: Amaranthaceae Juss. 
Stems single or branched, light green to reddish, more or less short and rough hairy
Leaves long petiolate leaves, ovate, pointed, gray-green
Root vertical root.
Propagation by seed.
Flowering period in june-september.
Inflorescence green, each flower unisexual but with both the male and female flowers on the same plant.
Fruit — urticle, nearly globe-shaped, slightly rugose.
Reproductive ability —1070 seeds/plant.
Viability of Seeds more than 40 years.
Germination within the temperature range of 6-36° C, germination from late april-july.