Status of Invasive Plants in Montana
Total number of exotic species reported: 322
Total number of records in EDDMapS: 12685
Invasive Plants by Category
- Aquatic - 5 species, 36 records
- Forbs/Herbs - 198 species, 7075 records
- Grass or Grasslike - 56 species, 1784 records
- Hardwood Trees - 22 species, 209 records
- Shrub or Subshrub - 19 species, 299 records
- Vines - 16 species, 374 records
Top Ten Abundant Invasive Plants (by number of reports)
- leafy spurge - 120 reports
- Canada thistle - 114 reports
- Russian knapweed - 113 reports
- spotted knapweed - 112 reports
- field bindweed - 112 reports
- prickly lettuce - 112 reports
- field pennycress - 112 reports
- western salsify - 112 reports
- big chickweed - 111 reports
- curly dock - 110 reports
Top Ten Widespread Invasive Plants (by number of positive counties)
- Canada thistle - 56/56 (100%)
- spotted knapweed - 56/56 (100%)
- leafy spurge - 56/56 (100%)
- field bindweed - 56/56 (100%)
- Russian knapweed - 56/56 (100%)
- prickly lettuce - 56/56 (100%)
- field pennycress - 56/56 (100%)
- western salsify - 56/56 (100%)
- bull thistle - 55/56 (98%)
- shepherd's-purse - 55/56 (98%)
Counties with the most invasive species reported
- Gallatin County - 251 species
- Missoula County - 233 species
- Ravalli County - 218 species
- Flathead County - 204 species
- Lake County - 202 species
- Sanders County - 180 species
- Park County - 178 species
- Lewis and Clark County - 170 species
- Yellowstone County - 166 species
- Carbon County - 166 species
Counties with the least invasive species reported
- Golden Valley County - 55 species
- Treasure County - 56 species
- Wheatland County - 56 species
- Prairie County - 61 species
- Liberty County - 62 species
- Garfield County - 72 species
- Fallon County - 73 species
- Richland County - 77 species
- Deer Lodge County - 78 species
- Carter County - 78 species
Report created on May 19, 2013 at 08:31 AM
by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.
