Iowa State University Extension Weed Science

Palmer amaranth resources
by Bob Hartzler

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Waterhemp's big, bad brother is back this spring, May 7, 2015

Western Iowa Fall Tour, Sept 3, 2014

It's Palmer time!! August 6, 2014

Palmer amaranth awareness - Still some work to do!! July 9, 2014

A case of mistaken identity: Spiny amaranth. June 26, 2014

A postitive note about Palmer amaranth, June 15, 2014

Early-season Palmer amaranth.
May 10, 2014

Current status in Iowa. June 2104

Identification resources

Historic distributions of weedy pigweeds (Amaranthus)

Palmer amaranth: ID, Biology and Management. Paper prepared for 2013 ICM Conference.

Prepared by Bob Hartzler, extension weed management specialist, Department of Agronomy, Iowa State University

For more information contact:
1126C Agronomy Hall
Ames, Iowa 50011-1010
Voice: (515) 294-1164
Submit questions or comments here.  

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Common chemical and trade names are used in this publication. The use of trade names is for clarity by the reader. Inclusion of a trade name does not imply endorsement of that particular brand of herbicide and exclusion does not imply nonapproval.