rough pigweed Directory References Discover Why Is Ireland Two Countries? What Do Eggs Have to Do with Easter? 6 Wars of Independence How Deadly Is Quicksand? Where Is “Old Zealand”? Titanosaurs: 8 of the World's Biggest Dinosaurs 9 Mind-Altering Plants Contents rough pigweed plant Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Amaranthus retroflexus, redroot Learn about this topic in these articles:pigweed In pigweed…base of the leafstalks; and rough pigweed, or redroot (A. retroflexus), is a stout plant up to 3 metres (about 10 feet) tall.Read More