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Redroot
Pigweed - Amaranthus retroflexus
Family: Amaranthaceae
Other names: Rough Pigweed, Redroot Amaranth
Description
This Pigweed is an annual herb that germinates from seeds each year. This happens whenever soil conditions are right and thus can be found in flower for a large part of the year. The stalk of this species is large - up to 6 feet. The infloresence is often quite dense. The leaves are also quite large and can be over 3 inches in lenght. The roots, while probably averaging only a meter in depth can reach nearly 2.5 meters in depth.
Other pigweeds include : tumble pigweed, kochia
Interesting facts
This plant is toxic when consumed in large quanities. It has been listed as a noxious weed partly because of the ill-effects it can have on the cattle whom ingest it fresh or in their hay.
VIDEO
Links to more information
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Everything you wanted to know about A. retroflexus- This government site is not pretty and it takes a while to find what you want, but in the end is a wealth of good information on this species. This site is an article summarizing several studies on the plant. You won't find this valuable information on many other sites on the web.
Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers
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