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Status of Invasive Plants in Minnesota

Total number of exotic species reported: 400

Total number of records in EDDMapS: 158477


Invasive Plants by Category

  • Aquatic - 14 species, 28720 records
  • Conifer Trees - 2 species, 13 records
  • Forbs/Herbs - 254 species, 71677 records
  • Grass or Grasslike - 54 species, 5094 records
  • Hardwood Trees - 23 species, 1540 records
  • Shrub or Subshrub - 30 species, 11310 records
  • Vines - 20 species, 1107 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. reed canarygrass - 26736 reports
  2. Canada thistle - 15724 reports
  3. spotted knapweed - 8875 reports
  4. common tansy - 8449 reports
  5. wild parsnip - 6957 reports
  6. European buckthorn - 6602 reports
  7. bull thistle - 3383 reports
  8. oxeye daisy - 3335 reports
  9. bush honeysuckles (exotic) - 2960 reports
  10. smooth brome - 2817 reports

Top Ten Widespread Invasive Plants (by number of positive counties)

  1. Canada thistle - 87/87 (100%)
  2. yellow sweet-clover - 87/87 (100%)
  3. European buckthorn - 86/87 (99%)
  4. leafy spurge - 86/87 (99%)
  5. smooth brome - 86/87 (99%)
  6. reed canarygrass - 85/87 (98%)
  7. western salsify - 85/87 (98%)
  8. bull thistle - 84/87 (97%)
  9. black medic - 83/87 (95%)
  10. lambsquarters - 82/87 (94%)

Counties with the most invasive species reported

  1. St. Louis County - 311 species
  2. Hennepin County - 271 species
  3. Ramsey County - 240 species
  4. Washington County - 226 species
  5. Houston County - 226 species
  6. Stearns County - 208 species
  7. Winona County - 205 species
  8. Clay County - 205 species
  9. Goodhue County - 204 species
  10. Blue Earth County - 200 species

Counties with the least invasive species reported

  1. Red Lake County - 66 species
  2. Rock County - 66 species
  3. Watonwan County - 71 species
  4. Stevens County - 72 species
  5. Yellow Medicine County - 75 species
  6. Grant County - 75 species
  7. Murray County - 78 species
  8. Pennington County - 78 species
  9. Cottonwood County - 80 species
  10. Meeker County - 81 species

Report created on March 27, 2015 at 01:17 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.