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Status of Invasive Plants in Indiana

Total number of exotic species reported: 469

Total number of records in EDDMapS: 25884


Invasive Plants by Category

  • Aquatic - 18 species, 863 records
  • Conifer Trees - 2 species, 10 records
  • Forbs/Herbs - 269 species, 12687 records
  • Grass or Grasslike - 61 species, 3223 records
  • Hardwood Trees - 35 species, 950 records
  • Shrub or Subshrub - 47 species, 1534 records
  • Vines - 32 species, 1655 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. multiflora rose - 337 reports
  2. Japanese honeysuckle - 238 reports
  3. barnyardgrass - 237 reports
  4. ladysthumb - 222 reports
  5. Eurasian water-milfoil - 205 reports
  6. garlic mustard - 204 reports
  7. big chickweed - 196 reports
  8. creeping yellow loosestrife, creeping Jenney - 183 reports
  9. redtop - 183 reports
  10. yellow sweet-clover - 174 reports

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

  1. tree-of-heaven - 92/92 (100%)
  2. purple crown-vetch - 92/92 (100%)
  3. autumn olive - 92/92 (100%)
  4. winter creeper - 92/92 (100%)
  5. English ivy - 92/92 (100%)
  6. Japanese honeysuckle - 92/92 (100%)
  7. multiflora rose - 92/92 (100%)
  8. common periwinkle - 92/92 (100%)
  9. purple deadnettle - 92/92 (100%)
  10. poison-hemlock - 92/92 (100%)

Counties with the most invasive species reported

  1. Porter County - 325 species
  2. St. Joseph County - 322 species
  3. Lake County - 320 species
  4. LaPorte County - 307 species
  5. Monroe County - 303 species
  6. Jefferson County - 297 species
  7. Tippecanoe County - 269 species
  8. Montgomery County - 261 species
  9. Lawrence County - 259 species
  10. Newton County - 255 species

Counties with the least invasive species reported

  1. Benton County - 108 species
  2. Union County - 114 species
  3. Adams County - 116 species
  4. Pulaski County - 120 species
  5. Scott County - 123 species
  6. Jay County - 124 species
  7. Martin County - 125 species
  8. Decatur County - 126 species
  9. Dubois County - 126 species
  10. Ohio County - 129 species

Report created on July 24, 2014 at 07:02 PM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.