rough pigweed Directory References Discover How Do We Know How Far Away the Stars Are? Why Are There Only 28 Days in February? Inventors and Inventions of the Industrial Revolution New Seven Wonders of the World Causes of the Great Depression 11 Egyptian Gods and Goddesses Do Camels Store Water in Their Humps? 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