Robert W. Freckmann Herbarium

Hazard/Poison and Eradication Information

      HAZARDOUS:  Some part of these plants MAY be known to be mildly to severely toxic to either animals and/or humans. They might cause symptoms either externally or internally. The list of hazardous plants is NOT complete and should be used as a guideline only. It is based on information obtained from the web sites listed in a Google search on "poison plants" (opens new window). Use these for more detailed information.

To search for other Wisconsin poisonous species- County and Status Search. Choose Hazard/Poison - "Yes", and any other criteria.

  ERADICATION:  These plants are known to be highly invasive, out competing native species and leading to a monoculture. They can destroy the habitat necessary for a healthy ecosystem. If they are found, the location should be noted and all individuals should be destroyed. The site should then be monitored in the future for new infestations.

To search for other Wisconsin Invasive species- County and Status Search. Choose Status - "Ecologically Invasive", and any other criteria.

For Links for more information: our Invasives page; Invasive Plants Assoc. of Wisconsin -IPAW (new window), and the Wisconsin Dept. of Natural Resources (new window).


Botany News/Events
Book We Recommend
Historical Botanists
Other Links
Botanical Club of Wisconsin (off site)
UW-Stevens Point Biology Dept.
Plants of Wisconsin
Vascular Plants
Natural Communities
Botany News/Events
Other Links
Lichens (off site)   
Tom Volk's Fungi (off site)
Taxonomy of Vascular Plants
                          Vascular Plants
Browse by: Identification Guides
Family Wildflowers
Genus Trees
Common Names Shrubs
Search by: Vines
Names Aquatic-Semi aquatic
Specimens Ferns - Fern Allies
Blooming Times Grasses, Sedges, or Rushes
County & Status Other Resources  
Town Range Taxonomy of Vascular Plants
  WI Checklist & CofC Values
Browse by:
Common Name
Search by:
Copyright 2012 Permissions Contact Us Web Map