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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

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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).


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.


Noxious Weed Information - Giant Salvinia (A List)
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.

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Last Modified: Feb 07, 2016
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