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Status of Invasive Plants in New Jersey

Total number of exotic species reported: 522

Total number of records in EDDMapS: 20504


Invasive Plants by Category

  • Aquatic - 19 species, 501 records
  • Conifer Trees - 3 species, 14 records
  • Forbs/Herbs - 283 species, 4121 records
  • Grass or Grasslike - 66 species, 1472 records
  • Hardwood Trees - 52 species, 3306 records
  • Shrub or Subshrub - 57 species, 4455 records
  • Vines - 41 species, 3034 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. linden viburnum - 1339 reports
  2. sericea lespedeza - 929 reports
  3. Callery pear (Bradford pear) - 928 reports
  4. Oriental photinia - 774 reports
  5. Japanese angelica tree - 678 reports
  6. English ivy - 567 reports
  7. mile-a-minute vine - 492 reports
  8. porcelain-berry - 477 reports
  9. mimosa - 355 reports
  10. Siebold's arrowwood - 354 reports

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

  1. giant foxtail - 21/21 (100%)
  2. bristlegrass - 21/21 (100%)
  3. European common reed - 19/21 (90%)
  4. Callery pear (Bradford pear) - 19/21 (90%)
  5. yellow iris - 19/21 (90%)
  6. tree-of-heaven - 19/21 (90%)
  7. sericea lespedeza - 19/21 (90%)
  8. bush honeysuckles (exotic) - 19/21 (90%)
  9. purple loosestrife - 19/21 (90%)
  10. cheatgrass - 19/21 (90%)

Counties with the most invasive species reported

  1. Cape May County - 430 species
  2. Hunterdon County - 429 species
  3. Camden County - 361 species
  4. Somerset County - 339 species
  5. Mercer County - 328 species
  6. Warren County - 323 species
  7. Middlesex County - 318 species
  8. Cumberland County - 316 species
  9. Monmouth County - 297 species
  10. Burlington County - 290 species

Counties with the least invasive species reported

  1. Passaic County - 103 species
  2. Union County - 123 species
  3. Atlantic County - 149 species
  4. Salem County - 173 species
  5. Gloucester County - 180 species
  6. Hudson County - 189 species
  7. Essex County - 214 species
  8. Bergen County - 247 species
  9. Morris County - 258 species
  10. Ocean County - 266 species

Report created on September 5, 2015 at 10:14 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.