Numerous weedy species in the pigweed family (Amaranthaceae) are found across Iowa, including waterhemp, redroot pigweed, smooth pigweed, Powell amaranth and others. At this time, Palmer amaranth has not been confirmed in the state, but because of its presence in surrounding states we suspect it may be here, or will appear in the near future.
Iowa State University
Hartzler, Robert G. and Owen, Michael D. K., "Is it Palmer Amaranth?" (2013). Integrated Crop Management News. 99.
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