Random invasive species images that represents what NISIC does
USDA.gov NAL NISIC Sudden oak death Formosan subterranean termite Yellow star thistle Giant African snail Cactus moth Purple loosestrife
HomeAbout National Invasive Species Information Center (NISIC)News and EventscouncilHelpContact Us
 Search the National Invasive Species Information Center
Search all USDA
Advanced Search
Search Tips
Browse by Geography
United States
Browse by Subject
Aquatic Species
Economic Impacts
Laws and Regulations
Manager's Tool Kit
Resource Library
You are here: Home / Aquatic Species / Species Profiles / Giant Salvinia
Aquatic Species
Species Profiles

Giant Salvinia

Giant SalviniaScientific name: Salvinia molesta D. S. Mitch. (ITIS)

Common names: Giant salvinia, kariba-weed

Click image to enlarge

Selected Resources

Native To: Brazil (McFarland et al. 2004)

Date of U.S. Introduction: 1990s (McFarland et al. 2004)

Means of Introduction: Horticultural trade (McFarland et al. 2004)

Impact: Forms dense mats that block sunlight and reduce oxygen levels (McFarland et al. 2004)

Current U.S. Distribution:

Federally Regulated:

  • Noxious Weeds Program
    USDA. APHIS. Plant Protection and Quarantine.
    Includes species listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between States without a permit.



Selected Resources:


Giant Salvinia
Aquatic Nuisance Species Task Force.


Federal Noxious Weed Disseminules of the U.S. - Fact Sheet: Salvinia auriculata complex
USDA. APHIS. PPQ. Center for Plant Health Science and Technology; California Department of Food and Agriculture.

Pacific Island Ecosystems at Risk (PIER) - Salvinia molesta
USDA. FS. Institute of Pacific Islands Forestry.

Invasive Plant Atlas of New England (IPANE) - Giant Salvinia, Water Fern
University of Georgia. Center for Invasive Species and Ecosystem Health.

Invasive Plant Atlas of the United States - Giant Salvinia
University of Georgia. Center for Invasive Species and Ecosystem Health.

Texas Invasives Database - Salvinia molesta

Invasive Species Compendium - Salvinia molesta
CAB International.

Salvinia molesta (Salviniaceae)
European and Mediterranean Plant Protection Organization.

Global Invasive Species Database - Salvinia molesta (aquatic plant)
World Conservation Union. Invasive Species Specialist Group.


Salvinia molesta Mitchell (Giant Salvinia) - Aquatic Plant Information System (APIS)
DOD. USACE. Engineer Research and Development Center. Environmental Laboratory.

Germplasm Resources Information Network (GRIN) - Salvinia molesta
USDA. ARS. National Genetic Resources Program.

PLANTS Database - Kariba-weed
USDA. NRCS. National Plant Data Center.

Salvinia - Weed Management Guide (PDF | 431 KB)
Cooperative Research Centre for Australian Weed Management.

Queensland Department of Agriculture, Fisheries and Forestry (Australia).

Weed Profile: Salvinia
New South Wales Department of Primary Industries (Australia).


Giant Salvinia (Salvinia molesta)
Arizona Department of Agriculture.

Encycloweedia: Data Sheet - Salvinia
California Department of Food and Agriculture.
Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources.

Giant Salvinia
Colorado Department of Agriculture. Noxious Weed Management Program.

Salvinia molesta
Florida Fish and Wildlife Conservation Commission.

Special Salvinia Alert! (PDF | 1.37 MB)
South Carolina Department of Natural Resources.

Giant Salvinia - Vermont Invasive Exotic Plant Fact Sheet (PDF | 114 KB)
Vermont Agency of Natural Resources. Environmental Conservation.


Weed Control in Natural Areas in the Western United States: Giant Salvinia (2013; PDF | 194 KB)
University of California. Weed Research and Information Center.

Plant Profile: Salvinia molesta
University of Florida. IFAS. Center for Aquatic and Invasive Plants.

Invasive Plant Atlas of the MidSouth - Giant Salvinia
Mississippi State University. GeoResources Institute.

AQUAPLANT - Giant Salvinia
Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.


Giant Salvinia
Colorado Weed Management Association.

Salvinia molesta (Kariba Weed)
East African Network for Taxonomy.


Integrated Taxonomic Information System. Salvinia molesta. [Accessed Sep 10, 2014].

McFarland, D.G., L.S. Nelson, M.J. Grodowitz, R.M. Smart, and C.S. Owens. 2004. Salvinia molesta D. S. Mitchell (Giant Salvinia) in the United States: A review of species ecology and approaches to management (PDF | 3.37 MB) (ERDC/EL SR-04-2) Jacksonville, Fla.: U.S. Army Corps of Engineers Aquatic Plant Control Research Program.

Back to Top
Last Modified: Nov 19, 2015
Bookmark and Share
I Want To
    Read Recent News Articles
    Find Management Plans
    Locate Images
    Find Experts

More ...

Aquatic Species
    Species Profiles
    Discussion Groups
    Economic Impacts
    Educational Resources
    Image Galleries
    Frequently Asked Questions
    What You Can Do
Media Help
 To view PDF files you must have Adobe Acrobat Reader installed on your computer.

To view Flash files you must  have Macromedia Flash Player installed on your computer.

 NISIC Home | NAL Home | USDA | AgNIC | Agricultural Research Service | Web Policies and Important Links | Site Map
FOIA | Accessibility Statement| Privacy Policy | Non-Discrimination Statement | Information Quality | USA.gov | White House