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Status of Invasive Plants in Rhode Island

Total number of exotic species reported: 415

Total number of records in EDDMapS: 4061


Invasive Plants by Category

  • Aquatic - 12 species, 146 records
  • Conifer Trees - 3 species, 12 records
  • Forbs/Herbs - 240 species, 1365 records
  • Grass or Grasslike - 52 species, 288 records
  • Hardwood Trees - 36 species, 226 records
  • Shrub or Subshrub - 47 species, 863 records
  • Vines - 25 species, 447 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. oriental bittersweet - 209 reports
  2. multiflora rose - 196 reports
  3. autumn olive - 105 reports
  4. Japanese barberry - 90 reports
  5. Japanese honeysuckle - 73 reports
  6. Morrow's honeysuckle - 70 reports
  7. red sorrel - 52 reports
  8. Black dog-strangling vine, black swallowwort - 50 reports
  9. European buckthorn - 50 reports
  10. European common reed - 41 reports

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

  1. Japanese barberry - 5/5 (100%)
  2. oriental bittersweet - 5/5 (100%)
  3. tree-of-heaven - 5/5 (100%)
  4. Norway maple - 5/5 (100%)
  5. autumn olive - 5/5 (100%)
  6. winged burning bush - 5/5 (100%)
  7. winter creeper - 5/5 (100%)
  8. ground ivy - 5/5 (100%)
  9. Japanese honeysuckle - 5/5 (100%)
  10. Morrow's honeysuckle - 5/5 (100%)

Counties with the most invasive species reported

  1. Providence County - 401 species
  2. Newport County - 361 species
  3. Washington County - 338 species
  4. Kent County - 278 species
  5. Bristol County - 245 species

Counties with the least invasive species reported

  1. Bristol County - 245 species
  2. Kent County - 278 species
  3. Washington County - 338 species
  4. Newport County - 361 species
  5. Providence County - 401 species

Report created on October 23, 2014 at 08:24 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.