| County | Notes |
County | Notes |
| Aitkin | 7-May-1921, 23-28-Oct-1982, 7, 8, 9, 10, 11-May-2021 | Lyon | 12-May-2004 |
| Anoka | 5-Jun-1959, 15-Jul-1991 | Mille Lacs | 25-May-1973 |
| Becker | 16-May-1983 | Morrison | 2-Jul-1975, 15-May-1998 |
| Beltrami | 24-May-2012, 4-Jun-2015 | Mower | 25-Jun-19-Jul-2017 |
| Benton | 8-Jun-2020 | Nicollet | 9-Jun-2017 |
| Blue Earth | 31-May-2018 | Norman | 24-May-1985, 26-Sep-1990 |
| Carlton | 23-Oct-1958, 24-May-1998, 7-Jun-2006, 5-Jun-2018 | Olmsted | 7-May-1985, 8-Jul-2000, 23-26-Apr-2007 |
| Cass | 30-May-2023 | Pipestone | 30-Jun-2020 |
| Clay | 8-22-Jul-1979, 1-2-May-2006, 6-May-2015 | Pope | 12-May-2001 |
| Cook | 16-May-1972, 27-Apr-1983, 17-May-1986, 2, 3, 5-Jun-2013 | Redwood | 24-26-Apr-2010 |
| Cottonwood | 2-Aug-2012 | Rice | 12, 13-Apr-2015, 1-Jul-2017 |
| Dakota | 18-19-Oct-2003 | Rock | 28-Jun-1976, 21-Jul-1990 |
| Dodge | 25-Jul-3-Aug-2009 | Sherburne | 4-Jun-17-Jul-1997 |
| Goodhue | 14-May-1966, 16-Oct-1987 | Sibley | 6-Jul-1978 |
| Hennepin | 10-Aug-1963, 27-Jun-1974, 10-May-1983 | St. Louis | 19-Jul-1991, 10-Jun-1993, 2-Jun-1999, 10-11-Jun-2000 |
| Hubbard | 13-16-May-1974, 27-May-1999, 25-26-Jul-1993 | Wabasha | 18-Oct-2011 |
| Jackson | 5-Jun-1930 (Roberts) | Washington | 22-May-1993 |
| Kandiyohi | (Roberts-Specimen lost-date unknown) | Wilkin | 21-Oct-1994, 6-Sep-2004 |
| Koochiching | 10-May-2001 | Winona | 10-Jun-1967, 11-May-1984 |
| Lac qui Parle | 10-11-Jul-1991, 23-Apr-2006 | Wright | 19-Jun-1967 |
| Lake | 16-May-1964, 14-Jun-1968, 30-Apr-1976, 18-Aug-1984, 4-22-Oct-1991, 25-May-2002, 24-25-May-2003 | Yellow Medicine | 1-Jul-2006, 5-Jun-2017 |
| Lake of the Woods | 3-7-Jul-1957 | | |
|
Reported
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