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Goodhue the 11th Minnesota county to confirm Palmer amaranth

The invasive weed Palmer amaranth has been positively identified in Goodhue County in southeastern Minnesota.

The Minnesota Department of Agriculture says it conducted a site visit after a crop consultant reported a suspected plant in two corn fields managed by one farmer.

MDA scouted fields in the surrounding area and did not find any additional Palmer plants.  The department has not determined how the weed got into the fields.

Left uncontrolled, a single plant typically produces 100,000 to 500,000 seeds and is resistant to multiple herbicides.

Palmer amaranth was discovered in Minnesota five years ago and has been confirmed in 11 counties.