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Status of Invasive Plants in New Jersey

Total number of exotic species reported: 525

Total number of records in EDDMapS: 20176


Invasive Plants by Category

  • Aquatic - 19 species, 493 records
  • Conifer Trees - 3 species, 14 records
  • Forbs/Herbs - 286 species, 4178 records
  • Grass or Grasslike - 67 species, 1458 records
  • Hardwood Trees - 51 species, 3263 records
  • Shrub or Subshrub - 58 species, 4424 records
  • Vines - 39 species, 2865 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. linden viburnum - 1337 reports
  2. sericea lespedeza - 925 reports
  3. Callery pear (Bradford pear) - 919 reports
  4. Oriental photinia - 770 reports
  5. Japanese angelica tree - 663 reports
  6. English ivy - 539 reports
  7. mile-a-minute vine - 466 reports
  8. porcelain-berry - 452 reports
  9. mimosa - 354 reports
  10. Siebold's arrowwood - 352 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 - 428 species
  3. Camden County - 363 species
  4. Somerset County - 340 species
  5. Mercer County - 329 species
  6. Warren County - 324 species
  7. Middlesex County - 319 species
  8. Cumberland County - 316 species
  9. Monmouth County - 298 species
  10. Burlington County - 289 species

Counties with the least invasive species reported

  1. Passaic County - 102 species
  2. Union County - 122 species
  3. Atlantic County - 150 species
  4. Salem County - 173 species
  5. Gloucester County - 181 species
  6. Hudson County - 189 species
  7. Essex County - 213 species
  8. Bergen County - 242 species
  9. Morris County - 258 species
  10. Ocean County - 265 species

Report created on May 23, 2015 at 12:16 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.