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Status of Invasive Plants in Oklahoma

Total number of exotic species reported: 309

Total number of records in EDDMapS: 11503


Invasive Plants by Category

  • Aquatic - 13 species, 196 records
  • Forbs/Herbs - 164 species, 2927 records
  • Grass or Grasslike - 66 species, 1533 records
  • Hardwood Trees - 24 species, 429 records
  • Shrub or Subshrub - 22 species, 1407 records
  • Vines - 20 species, 1081 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. sericea lespedeza - 634 reports
  2. Japanese honeysuckle - 605 reports
  3. privet - 345 reports
  4. shrubby lespedeza - 164 reports
  5. tall fescue - 134 reports
  6. johnsongrass - 110 reports
  7. yellow sweet-clover - 100 reports
  8. saltcedar - 91 reports
  9. puncturevine - 86 reports
  10. stinkgrass - 83 reports

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

  1. yellow sweet-clover - 59/77 (77%)
  2. fivestamen tamarisk - 56/77 (73%)
  3. common yarrow - 51/77 (66%)
  4. puncturevine - 49/77 (64%)
  5. barnyardgrass - 49/77 (64%)
  6. curly dock - 49/77 (64%)
  7. curly dock - 49/77 (64%)
  8. shepherd's-purse - 48/77 (62%)
  9. bristlegrass - 48/77 (62%)
  10. stinkgrass - 47/77 (61%)

Counties with the most invasive species reported

  1. Cleveland County - 240 species
  2. Oklahoma County - 191 species
  3. Muskogee County - 191 species
  4. Payne County - 189 species
  5. Bryan County - 185 species
  6. Murray County - 158 species
  7. Cherokee County - 151 species
  8. McCurtain County - 150 species
  9. Grady County - 140 species
  10. Marshall County - 139 species

Counties with the least invasive species reported

  1. Nowata County - 18 species
  2. Coal County - 21 species
  3. Hughes County - 27 species
  4. Ellis County - 32 species
  5. Atoka County - 32 species
  6. Cotton County - 32 species
  7. McIntosh County - 32 species
  8. Major County - 34 species
  9. Kiowa County - 35 species
  10. Washita County - 36 species

Report created on July 30, 2014 at 01:03 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.