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Aquatic Invasive Species - Plants

Report aquatic invasive species

DNR is seeking sighting information for invasive species in Indiana. If you believe you have spotted an invasive species, report it and, if possible, get pictures to assist in expert identification.

Aquatic Plant Rule

The Aquatic Plant Rule (312 IAC 18-3-23) designates 30 species of plants as invasive in Indiana. This rule makes it illegal to sell, offer for sale, gift, barter, exchange, distribute, or transport these plants in the State of Indiana.

Common NameScientific NameInformation
anchored water hyacinth**Eichhornia azurea 
arrowhead**Sagittaria sagittifolia 
Asian marshweed or ambulia**Limnophila sessilifloraSpecies Profile
Brazilian elodea, Brazilian waterweed, anacharis, or egeriaEgeria densaSpecies Profile, Watch CardID Sheet
brittle naiad or brittle water nymphNajas minorSpecies Profile
Caulerpa or Mediterranean killer algae**Caulerpa taxifolia 
Chinese water spinach or swamp morning-glory**Ipomoea aquaticaSpecies Profile
curlyleaf pondweedPotamogeton crispusSpecies Profile
duck lettuce**Ottelia alismoidesSpecies Profile
Eurasian watermilfoilMyriophyllum spicatumSpecies Profile
European frogbit or common frogbitHydrocharis morsus-ranaeSpecies Profile
exotic bur-reed**Sparganium erectum 
flowering rushButomus umbellatus Species profile
giant salvinia**Salvinia auriculataSpecies Profile
giant salvinia**Salvinia biloba 
giant salvinia**Salvinia herzogii 
giant salvinia**Salvinia molestaSpecies Profile
heartshape or false pickerelweed**Monochoria vaginalisSpecies Profile
hydrilla or water thyme**Hydrilla verticillataSpecies Profile, Watch CardID Sheet
miramar weed, indian swampweed, or hygro**Hygrophilia polyspermaSpecies Profile
monochoria, arrowleaf, or false pickerelweed**Monochoria hastata 
mosquito fern**Azolla pinnataSpecies profile
narrow-leaf cattailTypha angustifoliaSpecies Profile
oxygen weed or African elodea**Lagarosiphon major 
parrot feather or parrot feather watermilfoilMyriophyllum aquaticumSpecies Profile
starry stonewortNitellopsis obtusaSpecies Profile
water chestnutTrapa natansSpecies Profile
water soldierStratiotes aloidesSpecies Profile
yellow flag iris or tall yellow irisIris pseudacorusSpecies Profile
yellow floating heartNymphoides peltataSpecies Profile

** Indicates species that are federal noxious species (https://plants.usda.gov/java/noxious)

Plants Restricted Under Other Rules

Common NameScientific NameMore Information
common/giant reedPhragmites australis312 IAC 18-3-25 (Terrestrial Plant Rule), Species Profile
purple loosestrifeLythrum salicaria312 IAC 18-3-13, Species Profile, purple loosestrife
reed canarygrassPhalaris arundinacea312 IAC 18-3-25 (Terrestrial Plant Rule), Species Profile

More information on these and other Indiana-regulated invasive plant species can be found on the Indiana Invasive Species Council (IISC) Invasive Plant List .