How do I identify Palmer amaranth?
- Identifying Palmer Amaranth and Waterhemp in Wisconsin Using Vegetative Characteristics and Palmer amaranth: the pest that doesn’t pull any punches (U of WI Extension)
- Palmer amaranth identification (U of M Extension)
- Palmer amaranth (MN Dept of Ag)
- Genetic testing for Palmer amaranth identification
- Report suspected Palmer amaranth ideally with photos of the whole plant, leaf and petiole (attaches leaf to stem), and flower/seed heads if present. If you don’t hear a response within 3 working days, call report a pest at 1-888-545-6684 to leave a voicemail and email noxiousweeds.mda@state.mn.us. The MN Dept of Ag and U of M Extension can confirm Palmer amaranth.
- If you are asked to provide a sample for genetic testing, follow these steps - SOP for sending in samples – Tony, Denise and Shane working on SOP for internal use and will share with team when complete to simplify for the web.
- Consider how Palmer amaranth could have been introduced.
What do I do if I suspect I have Palmer amaranth on my land?
- Report suspected Palmer amaranth ideally with photos of the whole plant, leaf and petiole (attaches leaf to stem), and flower/seed heads if present. If you don’t hear a response within 3 working days, call report a pest at 1-888-545-6684 to leave a voicemail and email noxiousweeds.mda@state.mn.us. The MN Dept of Ag and U of M Extension can confirm Palmer amaranth.
- If you are asked to provide a sample for genetic testing, follow these steps - SOP for sending in samples – Tony, Denise and Shane working on SOP for internal use and will share with team when complete to simplify for the web.
- Consider how Palmer amaranth could have been introduced.
Contact the MN Dept of Ag’s seed regulatory program at (need contact email and phone number) and save any remaining seed or screenings.
- Keep Palmer Amaranth From Spreading (NDSU)
- Link to Screenings Permit Holders capable of devitalizing
- Links to research on what kills weed seeds
What if I suspect Palmer amaranth contamination in my seed or screenings?
Contact the MN Dept of Ag’s seed regulatory program at (need contact email and phone number) and save any remaining seed or screenings.
- Keep Palmer Amaranth From Spreading (NDSU)
- Link to Screenings Permit Holders capable of devitalizing
- Links to research on what kills weed seeds
Contact the MN Dept of Ag’s feed regulatory program at 651-201-6064 or mda.dfid-complaint@state.mn.us and save any remaining feed.
- MN Crop Improvement Assoc. directory for Noxious Weed Seed-free Forage and Mulch
- Keep Palmer Amaranth From Spreading (NDSU)
- Feed manufacturer processes to devitalize weed seed (Feed Group)
- Heat
- Pelletized
What if I suspect Palmer amaranth contamination in my feed?
Contact the MN Dept of Ag’s feed regulatory program at 651-201-6064 or mda.dfid-complaint@state.mn.us and save any remaining feed.
- MN Crop Improvement Assoc. directory for Noxious Weed Seed-free Forage and Mulch
- Keep Palmer Amaranth From Spreading (NDSU)
- Feed manufacturer processes to devitalize weed seed (Feed Group)
- Heat
- Pelletized
