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Status of Invasive Plants in Arizona

Total number of exotic species reported: 406

Total number of records in EDDMapS: 42389


Invasive Plants by Category

  • Aquatic - 13 species, 493 records
  • Cactus - 1 species, 3 records
  • Forbs/Herbs - 204 species, 17476 records
  • Grass or Grasslike - 109 species, 16671 records
  • Hardwood Trees - 33 species, 1189 records
  • Palms - 1 species, 1 records
  • Shrub or Subshrub - 23 species, 3636 records
  • Vines - 21 species, 1401 records

Top Ten Abundant Invasive Plants (by number of reports)

  1. buffelgrass - 6298 reports
  2. salsola - 2140 reports
  3. cheatgrass - 2034 reports
  4. common mullein - 1533 reports
  5. Dalmatian toadflax - 1510 reports
  6. redstem filaree - 1469 reports
  7. African mustard - 1334 reports
  8. tamarisk - 1245 reports
  9. bull thistle - 1205 reports
  10. camelthorn - 1192 reports

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

  1. johnsongrass - 15/15 (100%)
  2. tamarisk - 15/15 (100%)
  3. puncturevine - 15/15 (100%)
  4. field bindweed - 15/15 (100%)
  5. wild oat - 15/15 (100%)
  6. rescuegrass - 15/15 (100%)
  7. bermudagrass - 15/15 (100%)
  8. barnyardgrass - 15/15 (100%)
  9. stinkgrass - 15/15 (100%)
  10. redstem filaree - 15/15 (100%)

Counties with the most invasive species reported

  1. Coconino County - 317 species
  2. Pima County - 289 species
  3. Maricopa County - 259 species
  4. Yavapai County - 243 species
  5. Apache County - 238 species
  6. Cochise County - 234 species
  7. Navajo County - 223 species
  8. Gila County - 207 species
  9. Mohave County - 183 species
  10. Santa Cruz County - 177 species

Counties with the least invasive species reported

  1. La Paz County - 66 species
  2. Yuma County - 98 species
  3. Greenlee County - 115 species
  4. Graham County - 165 species
  5. Pinal County - 169 species
  6. Santa Cruz County - 177 species
  7. Mohave County - 183 species
  8. Gila County - 207 species
  9. Navajo County - 223 species
  10. Cochise County - 234 species

Report created on December 22, 2014 at 07:03 AM by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.