Asian Copperleaf: A new weed threat arrives in Minnesota
By Sithin Mathew, Weed Science Graduate Student, Matt Pfarr, Former Crops Extension Educator, Debalin Sarangi, Extension Weed Scientist, University of Minnesota
Asian copperleaf following corn harvest.
Iowa State University Extension and Outreach photo
By Sithin Mathew, Weed Science Graduate Student, Matt Pfarr, Former Crops Extension Educator, Debalin Sarangi, Extension Weed Scientist, University of Minnesota
In the fall of 2025, a new and concerning weed species was identified in a corn field in Rice County, Minnesota: Asian copperleaf (Acalypha australis).
Asian copperleaf growing in a corn field in Rice County, Minn.