Status of Invasive Plants in Vermont

Invasive Plants by Category

• Aquatic - 7 species, 166 records
• Conifer Trees - 2 species, 15 records
• Forbs/Herbs - 205 species, 3503 records
• Grass or Grasslike - 44 species, 733 records
• Hardwood Trees - 30 species, 677 records
• Shrub or Subshrub - 34 species, 1147 records
• Vines - 19 species, 236 records

Top Ten Abundant Invasive Plants (by number of reports)

1. European buckthorn - 282 reports
2. Morrow's honeysuckle - 241 reports
3. exotic bush honeysuckles - 173 reports
4. glossy buckthorn - 173 reports
5. Japanese knotweed - 151 reports
6. Japanese barberry - 148 reports
7. purple loosestrife - 140 reports
8. reed canarygrass - 131 reports
9. coltsfoot - 116 reports
10. European barberry - 104 reports

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

1. Canada thistle - 14/14 (100%)
2. purple loosestrife - 14/14 (100%)
3. yellow toadflax - 14/14 (100%)
4. common St. Johnswort - 14/14 (100%)
5. orange hawkweed - 14/14 (100%)
6. smooth brome - 14/14 (100%)
7. hedge bindweed - 14/14 (100%)
8. barnyardgrass - 14/14 (100%)
9. goosegrass - 14/14 (100%)
10. oxeye daisy - 14/14 (100%)

Counties with the most invasive species reported

1. Chittenden County - 318 species
2. Windham County - 276 species
3. Rutland County - 270 species
4. Windsor County - 267 species
5. Caledonia County - 261 species
6. Addison County - 240 species
7. Bennington County - 232 species
8. Orange County - 173 species
9. Washington County - 171 species
10. Franklin County - 169 species

Counties with the least invasive species reported

1. Grand Isle County - 112 species
2. Essex County - 122 species
3. Lamoille County - 143 species
4. Orleans County - 153 species
5. Franklin County - 169 species
6. Washington County - 171 species
7. Orange County - 173 species
8. Bennington County - 232 species
9. Addison County - 240 species
10. Caledonia County - 261 species