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Status of Invasive Plants in Oklahoma

Total number of exotic species reported: 303

Total number of records in EDDMapS: 11622


Invasive Plants by Category

  • Aquatic - 13 species, 196 records
  • Forbs/Herbs - 161 species, 2887 records
  • Grass or Grasslike - 64 species, 1533 records
  • Hardwood Trees - 24 species, 429 records
  • Shrub or Subshrub - 22 species, 1407 records
  • Vines - 19 species, 1082 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. bristlegrass - 48/77 (62%)
  9. shepherd's-purse - 48/77 (62%)
  10. stinkgrass - 47/77 (61%)

Counties with the most invasive species reported

  1. Cleveland County - 238 species
  2. Oklahoma County - 191 species
  3. Muskogee County - 191 species
  4. Payne County - 189 species
  5. Bryan County - 184 species
  6. Murray County - 158 species
  7. McCurtain County - 153 species
  8. Cherokee County - 152 species
  9. Grady County - 139 species
  10. Marshall County - 137 species

Counties with the least invasive species reported

  1. Nowata County - 19 species
  2. Coal County - 22 species
  3. Hughes County - 28 species
  4. Cotton County - 33 species
  5. Ellis County - 33 species
  6. Atoka County - 34 species
  7. McIntosh County - 34 species
  8. Major County - 35 species
  9. Kiowa County - 36 species
  10. Stephens County - 36 species

Report created on August 27, 2015 at 10:15 PM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.