Amaranth, Green; Pigweed

Amaranthus hybridus

Of over a dozen varieties of this weedy plant, this and A. retroflexus (also confusingly called Green Amaranth) are the most common.  

2-5 feet; sun.

Late Summer-Autumn (August-October)

Stems sometimes reddish.  

25 August 2020.

Green Amaranth (A. hybridus), 25 August 2020.