Status of Invasive Plants in Utah

Total number of exotic species reported: 429

Total number of records in EDDMapS: 144784


Invasive Plants by Category

  • Aquatic - 8 species, 2301 records
  • Forbs/Herbs - 243 species, 113483 records
  • Grass or Grasslike - 81 species, 7385 records
  • Hardwood Trees - 33 species, 9414 records
  • Shrub or Subshrub - 33 species, 5635 records
  • Vines - 18 species, 2753 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. squarrose knapweed - 31369 reports
  2. musk thistle - 12728 reports
  3. saltcedar - 9000 reports
  4. hoary cress - 8118 reports
  5. Scotch thistle - 6630 reports
  6. houndstongue - 5950 reports
  7. Canada thistle - 5846 reports
  8. Russian knapweed - 4518 reports
  9. perennial pepperweed - 3962 reports
  10. tamarisk - 3414 reports

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

  1. Russian olive - 29/29 (100%)
  2. musk thistle - 29/29 (100%)
  3. Canada thistle - 29/29 (100%)
  4. common mullein - 29/29 (100%)
  5. bull thistle - 29/29 (100%)
  6. common yarrow - 29/29 (100%)
  7. field bindweed - 29/29 (100%)
  8. Russian knapweed - 29/29 (100%)
  9. creeping bentgrass - 29/29 (100%)
  10. prostrate pigweed - 29/29 (100%)

Counties with the most invasive species reported

  1. Utah County - 357 species
  2. Salt Lake County - 352 species
  3. Washington County - 313 species
  4. Cache County - 281 species
  5. Weber County - 231 species
  6. Uintah County - 207 species
  7. San Juan County - 201 species
  8. Box Elder County - 201 species
  9. Davis County - 198 species
  10. Duchesne County - 184 species

Counties with the least invasive species reported

  1. Morgan County - 108 species
  2. Iron County - 122 species
  3. Piute County - 123 species
  4. Beaver County - 136 species
  5. Carbon County - 138 species
  6. Wayne County - 143 species
  7. Daggett County - 145 species
  8. Emery County - 149 species
  9. Rich County - 154 species
  10. Kane County - 158 species

Report created on April 19, 2014 at 11:14 PM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.



Bugwood Center Developed by The University of Georgia - Center for Invasive Species and Ecosystem Health.
Last updated on Tuesday, December 04, 2012 at 08:59 AM