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Status of Invasive Plants in New Jersey

Total number of exotic species reported: 523

Total number of records in EDDMapS: 19999


Invasive Plants by Category

  • Aquatic - 19 species, 489 records
  • Conifer Trees - 3 species, 14 records
  • Forbs/Herbs - 286 species, 4176 records
  • Grass or Grasslike - 67 species, 1447 records
  • Hardwood Trees - 50 species, 3225 records
  • Shrub or Subshrub - 58 species, 4379 records
  • Vines - 39 species, 2812 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. linden viburnum - 1327 reports
  2. sericea lespedeza - 924 reports
  3. Callery pear (Bradford pear) - 913 reports
  4. Oriental photinia - 761 reports
  5. Japanese angelica tree - 657 reports
  6. English ivy - 530 reports
  7. porcelain-berry - 452 reports
  8. mile-a-minute vine - 449 reports
  9. mimosa - 353 reports
  10. Siebold's arrowwood - 334 reports

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

  1. giant foxtail - 21/21 (100%)
  2. bristlegrass - 21/21 (100%)
  3. tree-of-heaven - 19/21 (90%)
  4. sericea lespedeza - 19/21 (90%)
  5. bush honeysuckles (exotic) - 19/21 (90%)
  6. purple loosestrife - 19/21 (90%)
  7. cheatgrass - 19/21 (90%)
  8. yellow iris - 19/21 (90%)
  9. European common reed - 19/21 (90%)
  10. English ivy - 18/21 (86%)

Counties with the most invasive species reported

  1. Hunterdon County - 431 species
  2. Cape May County - 427 species
  3. Camden County - 363 species
  4. Somerset County - 339 species
  5. Mercer County - 329 species
  6. Warren County - 323 species
  7. Middlesex County - 319 species
  8. Cumberland County - 316 species
  9. Monmouth County - 297 species
  10. Burlington County - 289 species

Counties with the least invasive species reported

  1. Passaic County - 101 species
  2. Union County - 121 species
  3. Atlantic County - 150 species
  4. Salem County - 173 species
  5. Gloucester County - 181 species
  6. Hudson County - 189 species
  7. Essex County - 211 species
  8. Bergen County - 241 species
  9. Morris County - 257 species
  10. Ocean County - 264 species

Report created on November 23, 2014 at 11:52 PM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.