There are many resources you can link to help you determine whether your plant is considered invasive to your region.
You might start with the USDA PLANTS database and
NatureServe, then maybe a more regional source from the lists
below. It is always a good idea to check more than one source.
Once you have exhausted the lists below, you may also wish to explore our more general
Invasive plants lists/Southeast USA
Florida Center for Aquatic and Invasive Plants
The photo murals are amazing and there's tons of plant information.
Florida Exotic Pest Plant Council.
Live in Florida? Concerned about invasives? Visit the Florida EPPC!
Southeast Exotic Pest Plant Council
Tennessee Exotic Pest Plant Council in a new form.
Southwest Florida Aquatic Nuisance Species Surveillance and Education Network
Its purpose is to increase public education on aquatic nuisance species, leading to a greater awareness of their threats to the water resources of the greater Charlotte Harbor, Caloosahatchee and Big Cypress watersheds.
Invasive plants lists/Northeast USA
Adirondack Park Invasive Plant Program
The Adirondack Park Invasive Plant Program mission is to document invasive plant distributions and to advance measures to protect and restore native ecosystems in the Park through partnerships with Adirondack residents and institutions.
Connecticut Invasive Plant Working Group
Working hard in Connecticut against invasive plants.
Connecticut Valley Invasive Plants
The aliens have arrived!
Invasive Exotic Plants of the Northeast
List of exotics.
Maryland Invasive Species Council
Check out the featured Invader of the Month.
Maryland Native Plant Society
What to plant instead of invasives? Ask your local native plant society.
Mid-Atlantic Exotic Pest Plant Council
A one-stop shop for information regarding invasive plants of the Mid-Atlantic region.
Invasive Plant Council of New York State
Dedicated to solving invasive plant species problems in New York State.
Pennsylvania Invasive Exotic Plant Management Tutorial.
The Pennsylvania Dept. of Conservation and Natural Resources created this tutorial on invasive species work.
Rhode Island Invasive Species Council
The mission of the Rhode Island Invasive Species Council is to protect native biodiversity in Rhode Island.
Rhode Island Wild Plant Society
Preservation and protection.
Invasive plants lists/Southwest-Central west USA
California Invasive Plant Council
Research, restoration, and education on California's fight against wildland plant invaders!
California Department of Food and Agriculture
Fruitflies, fire ants, infested nursery stock...oh my! Check out the EncycloWeedia, a featured link on the right side of the page.
Hawaiian Ecosystems at Risk
Threats to the pacific islands.
Hawaiian Weed Risk Assessment
A project report.
Invasive Algae in Hawai'i
Hidden dangers in paradise!
Marine Invasives in Hawai'i
Case studies, alien lists, and species data sheets!
New Mexico State University Weed Information page
Key resources to residents of New Mexico.
UC Davis Weed Research & Information Center.
A large, sprawling site that leans towards crop weeds.
Washington Department of Ecology
Learn about aquatic weeds.
Washington Invasive Species Coalition
Working to close marine and terrestrial pathways of introduction, exploring the creation of an invasive species council, and more!
Invasive plants lists/Northwest USA
Committee for Noxious and Invasive Plants Management in Alaska (CNIPM)
Need we say more?
Homer Soil & Water Conservation District
An Alaskan leader in invasives work.
Idaho Weed Control Association
For responsible weed management.
Invasive Plants: Taking Root in Alaska
The Homer Soil and Water Conservation District created a curriculum on invasives for school children, grades 9-12! Very cool.
Redwood National and State Parks
See their exotic species management plan.
San Francisco Estuary Institute
Publishers of "A Practical Guidebook to the Identification and Control of Invasive Aquatic and Wetland Plants in the San Francisco Bay-Delta Region." Includes the Guide to the Exotics of San Francisco Bay.
Invasive plants lists/Central USA
Illinois Vegetation Management Guidelines
Guidelines for buckthorns, teasel, and more!
Invasive Plant Association of Wisconsin
Learn what you can do to prevent the spread of invasive plants from the IPAW printable brochure.
Michigan Invasive Plant Council Weed Assessment
A product of the Pulling Together Initiative, a Texas-sized partnership to manage non-native invasive plants. The Pulling Together Initiative is a collaborative project between the Texas Forest Service, the Forest Health Protection branch of the U.S. Department of Agriculture (USDA) Forest Service, the Central Southwest Gulf Coast Information Node of NBII at the Houston Advanced Research Center, and the Lady Bird Johnson Wildflower Center.
Invasive plants lists/Nation-wide USA
Alien Plant Working Group
Fact sheets, plant lists, and background information. Includes a HUGE list of plants with states and natural areas where they are invasive. Fact sheets are available for some plants.
Center for Invasive Plant Management
Fighting weeds in the western states.
Fire Effects Information System
Provides up-to-date information about fire effects on animals and plants.
Forest Service Forest Health web page (USDA)
Monitoring insects and disease to maintain forest health.
Global Invasive Species Information Network (GISIN)
Invaders Database System
Noxious weed lists, and weeds of northwest US.
Invasive Plant Atlas of New England
Database of invasive and potentially invasive plants in New England.
Marine Invasions Research Lab
Brought to you by the Smithsonian Environmental Research Center.
NAWMA Mapping Standards
The North American Weed Management Association's set of mapping standards for invasive plant species that facilitate consistency in data collection.
Nonindigenous Aquatic Species
Another USGS site, very meaty.
USDA APHIS Animal and Plant Health Inspection Service.
USDA ARS Exotic & Invasive Weed Research Unit
Weed Risk Assessments (NatureServe)
For use in assessing, categorizing, and listing non-native plants according to their impacts on native plants, animals, and natural communities and to make the process of assessing non-native species objective, transparent, and systematic. The protocol is intended to be applied to species as they occur over large areas, such as nations, ecoregions, provinces, or states. NatureServe has begun using the protocol in an effort to eventually assess the approximately 3,500 non-native vascular plants recorded as occurring outside of cultivation in the United States; by June 1, 2004 NatureServe had already completed 300 assessments. To look up a plant go to the NatureServe Explorer.
History and development of the Voluntary Codes of Conduct for horticulture.
Codes of Conduct
The Findings and Principles that were developed at the Missouri Botanical Gardens 2001 Workshop.
Cultivars are plant strains that have been selected for various horticultural characteristics. How do they fit into the issues of invasive species and horticultural plants?
Using the Codes
Information on how to implement these Codes with your business, organization or other group. Examples of how to implement each of the Codes are given.