Palmer amaranth is native to the Southwest United States, but has been expanding its range for at least 50 years. Most recently it has moved into the Midwest and has been reported in all Cornbelt states except for Minnesota and the Dakotas. This article will provide information on known infestations in Iowa; it is likely there are additional infestations that have not been brought to our attention.
This article may be republished without further permission if it is published as written and includes credit to the author, Integrated Crop Management News and Iowa State University Extension. Prior permission from the author is required if this article is republished in any other manner.
Iowa State University
Hartzler, Robert G., "Palmer Amaranth in Iowa Update" (2014). Integrated Crop Management News. 2.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.