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Status of Invasive Plants in Louisiana

Total number of exotic species reported: 483

Total number of records in EDDMapS: 30407


Invasive Plants by Category

  • Aquatic - 19 species, 1134 records
  • Cactus - 1 species, 2 records
  • Conifer Trees - 2 species, 34 records
  • Ferns - 1 species, 11 records
  • Forbs/Herbs - 238 species, 7461 records
  • Grass or Grasslike - 93 species, 3805 records
  • Hardwood Trees - 40 species, 3411 records
  • Shrub or Subshrub - 46 species, 2645 records
  • Vines - 43 species, 4730 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. Japanese honeysuckle - 1851 reports
  2. Chinese tallowtree - 1760 reports
  3. Japanese climbing fern - 1326 reports
  4. privet - 1203 reports
  5. common water hyacinth - 236 reports
  6. alligatorweed - 211 reports
  7. chinaberry - 209 reports
  8. tall fescue - 192 reports
  9. kudzu - 184 reports
  10. water fern - 158 reports

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

  1. Japanese honeysuckle - 64/64 (100%)
  2. bush honeysuckles (exotic) - 64/64 (100%)
  3. johnsongrass - 64/64 (100%)
  4. Chinese tallowtree - 64/64 (100%)
  5. rescuegrass - 64/64 (100%)
  6. bermudagrass - 64/64 (100%)
  7. goosegrass - 64/64 (100%)
  8. dallisgrass - 64/64 (100%)
  9. vaseygrass - 64/64 (100%)
  10. annual bluegrass - 64/64 (100%)

Counties with the most invasive species reported

  1. Ouachita Parish - 411 species
  2. Caddo Parish - 331 species
  3. East Baton Rouge Parish - 315 species
  4. Orleans Parish - 304 species
  5. Lincoln Parish - 300 species
  6. Natchitoches Parish - 292 species
  7. Morehouse Parish - 277 species
  8. St. Charles Parish - 271 species
  9. Bossier Parish - 260 species
  10. St. Tammany Parish - 260 species

Counties with the least invasive species reported

  1. St. James Parish - 116 species
  2. Assumption Parish - 121 species
  3. Ascension Parish - 123 species
  4. Iberville Parish - 124 species
  5. St. Bernard Parish - 133 species
  6. West Baton Rouge Parish - 139 species
  7. Plaquemines Parish - 142 species
  8. Beauregard Parish - 142 species
  9. Pointe Coupee Parish - 146 species
  10. St. Martin Parish - 148 species

Report created on July 30, 2014 at 07:11 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.