Status of Invasive Plants in Wyoming

Total number of exotic species reported: 319

Total number of records in EDDMapS: 9757


Invasive Plants by Category

  • Aquatic - 7 species, 141 records
  • Forbs/Herbs - 193 species, 5104 records
  • Grass or Grasslike - 53 species, 942 records
  • Hardwood Trees - 16 species, 158 records
  • Shrub or Subshrub - 17 species, 177 records
  • Vines - 16 species, 199 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. musk thistle - 572 reports
  2. leafy spurge - 411 reports
  3. yellow toadflax - 250 reports
  4. spotted knapweed - 236 reports
  5. Canada thistle - 233 reports
  6. Dyer's woad - 169 reports
  7. dalmatian toadflax - 88 reports
  8. common mullein - 86 reports
  9. houndstongue - 79 reports
  10. perennial pepperweed - 78 reports

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

  1. spotted knapweed - 23/23 (100%)
  2. musk thistle - 23/23 (100%)
  3. Canada thistle - 23/23 (100%)
  4. common mullein - 23/23 (100%)
  5. bull thistle - 23/23 (100%)
  6. leafy spurge - 23/23 (100%)
  7. field bindweed - 23/23 (100%)
  8. Russian knapweed - 23/23 (100%)
  9. creeping bentgrass - 23/23 (100%)
  10. smooth brome - 23/23 (100%)

Counties with the most invasive species reported

  1. Albany County - 237 species
  2. Park County - 233 species
  3. Fremont County - 219 species
  4. Crook County - 209 species
  5. Sheridan County - 199 species
  6. Teton County - 196 species
  7. Laramie County - 185 species
  8. Carbon County - 185 species
  9. Goshen County - 169 species
  10. Platte County - 166 species

Counties with the least invasive species reported

  1. Uinta County - 108 species
  2. Niobrara County - 116 species
  3. Hot Springs County - 129 species
  4. Sweetwater County - 131 species
  5. Sublette County - 139 species
  6. Campbell County - 142 species
  7. Washakie County - 147 species
  8. Johnson County - 148 species
  9. Weston County - 151 species
  10. Big Horn County - 151 species

Report created on April 16, 2014 at 09:07 AM 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