Status of Invasive Plants in Illinois
Total number of exotic species reported: 492
Total number of records in EDDMapS: 37659
Invasive Plants by Category
- Aquatic - 10 species, 524 records
- Conifer Trees - 2 species, 11 records
- Forbs/Herbs - 270 species, 16954 records
- Grass or Grasslike - 70 species, 5412 records
- Hardwood Trees - 50 species, 1473 records
- Shrub or Subshrub - 46 species, 2293 records
- Vines - 33 species, 2457 records
Top Ten Abundant Invasive Plants (by number of reports)
- multiflora rose - 618 reports
- Japanese stiltgrass - 529 reports
- Japanese honeysuckle - 451 reports
- redtop - 311 reports
- big chickweed - 307 reports
- autumn-olive - 303 reports
- kudzu - 277 reports
- ladysthumb - 269 reports
- Amur honeysuckle - 255 reports
- moneywort - 249 reports
Top Ten Widespread Invasive Plants (by number of positive counties)
- common chickweed - 102/102 (100%)
- common mullein - 102/102 (100%)
- orchardgrass - 102/102 (100%)
- wild garlic - 102/102 (100%)
- common ragweed - 102/102 (100%)
- smooth brome - 102/102 (100%)
- cheatgrass - 102/102 (100%)
- shepherd's-purse - 102/102 (100%)
- common mouse-ear chickweed - 102/102 (100%)
- big chickweed - 102/102 (100%)
Counties with the most invasive species reported
- Cook County - 393 species
- DuPage County - 391 species
- Jackson County - 374 species
- Lake County - 330 species
- Kane County - 327 species
- Will County - 309 species
- Champaign County - 295 species
- McHenry County - 274 species
- Union County - 268 species
- Kendall County - 265 species
Counties with the least invasive species reported
- Jasper County - 100 species
- Warren County - 105 species
- Clay County - 109 species
- Bond County - 111 species
- Mercer County - 117 species
- Stark County - 121 species
- Marshall County - 122 species
- Edwards County - 126 species
- Whiteside County - 128 species
- Brown County - 128 species
Report created on May 21, 2013 at 10:36 AM
by the UGA Center for Invasive Species and Ecosystem Health using EDDMapS Technology and Data.
