Botanical directory giving details and descriptions of injurious vegetables, flowers and other plants. Search using common or Latin names.

Tool from the Hawaiian Ecosystems at Risk project chronicles facts about non-indigenous plants, invertebrates and vertebrates.

Directory of invasive plant of the Northwestern United States facilitates searches by name, area or location.

Invasive Species Specialist Group details invasive species in land, aquatic and marine environments. Find a searchable database of species.

Database of biocontrol methods for weeds and insects includes, diffuse knapweed, rush skeletonweed, bull thistle, puncturevine and others.