Status of Invasive Plants in Iowa

Total number of exotic species reported: 357

Total number of records in EDDMapS: 13979


Invasive Plants by Category

  • Aquatic - 13 species, 385 records
  • Forbs/Herbs - 209 species, 6733 records
  • Grass or Grasslike - 49 species, 2216 records
  • Hardwood Trees - 23 species, 364 records
  • Shrub or Subshrub - 34 species, 487 records
  • Vines - 21 species, 470 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. green foxtail - 135 reports
  2. wild parsnip - 133 reports
  3. cheatgrass - 132 reports
  4. ladysthumb - 130 reports
  5. timothy - 129 reports
  6. catnip - 127 reports
  7. curly dock - 127 reports
  8. quackgrass - 126 reports
  9. stinkgrass - 126 reports
  10. curly dock - 123 reports

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

  1. Canada thistle - 99/99 (100%)
  2. bull thistle - 99/99 (100%)
  3. velvetleaf - 99/99 (100%)
  4. black mustard - 99/99 (100%)
  5. yellow sweet-clover - 99/99 (100%)
  6. broadleaf plantain - 99/99 (100%)
  7. ladysthumb - 99/99 (100%)
  8. curly dock - 99/99 (100%)
  9. curly dock - 99/99 (100%)
  10. stinking chamomile - 98/99 (99%)

Counties with the most invasive species reported

  1. Story County - 267 species
  2. Page County - 204 species
  3. Scott County - 201 species
  4. Johnson County - 189 species
  5. Fremont County - 180 species
  6. Des Moines County - 178 species
  7. Dubuque County - 172 species
  8. Muscatine County - 170 species
  9. Allamakee County - 170 species
  10. Jefferson County - 168 species

Counties with the least invasive species reported

  1. Franklin County - 54 species
  2. Monroe County - 56 species
  3. Worth County - 60 species
  4. Mitchell County - 65 species
  5. Buena Vista County - 69 species
  6. Grundy County - 70 species
  7. Calhoun County - 70 species
  8. Appanoose County - 71 species
  9. Keokuk County - 72 species
  10. Bremer County - 74 species

Report created on April 20, 2014 at 09:22 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.



Bugwood Center Developed by The University of Georgia - Center for Invasive Species and Ecosystem Health.
Last updated on Tuesday, December 04, 2012 at 08:59 AM