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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 Name Scientific Name Information
anchored water hyacinth** Eichhornia azurea  
arrowhead** Sagittaria sagittifolia  
Asian marshweed or ambulia** Limnophila sessiliflora Species Profile
Brazilian elodea, Brazilian waterweed, anacharis, or egeria Egeria densa Species Profile, Watch CardID Sheet
brittle naiad or brittle water nymph Najas minor Species Profile
Caulerpa or Mediterranean killer algae** Caulerpa taxifolia  
Chinese water spinach or swamp morning-glory** Ipomoea aquatica Species Profile
curlyleaf pondweed Potamogeton crispus Species Profile
duck lettuce** Ottelia alismoides Species Profile
Eurasian watermilfoil Myriophyllum spicatum Species Profile
European frogbit or common frogbit Hydrocharis morsus-ranae Species Profile
exotic bur-reed** Sparganium erectum  
flowering rush Butomus umbellatus  Species profile
giant salvinia** Salvinia auriculata Species Profile
giant salvinia** Salvinia biloba  
giant salvinia** Salvinia herzogii  
giant salvinia** Salvinia molesta Species Profile
heartshape or false pickerelweed** Monochoria vaginalis Species Profile
hydrilla or water thyme** Hydrilla verticillata Species Profile, Watch CardID Sheet
miramar weed, indian swampweed, or hygro** Hygrophilia polysperma Species Profile
monochoria, arrowleaf, or false pickerelweed** Monochoria hastata  
mosquito fern** Azolla pinnata Species profile
narrow-leaf cattail Typha angustifolia Species Profile
oxygen weed or African elodea** Lagarosiphon major  
parrot feather or parrot feather watermilfoil Myriophyllum aquaticum Species Profile
starry stonewort Nitellopsis obtusa Species Profile
water chestnut Trapa natans Species Profile
water soldier Stratiotes aloides Species Profile
yellow flag iris or tall yellow iris Iris pseudacorus Species Profile
yellow floating heart Nymphoides peltata Species Profile

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

Plants Restricted Under Other Rules

Common Name Scientific Name More Information
common/giant reed Phragmites australis 312 IAC 18-3-25 (Terrestrial Plant Rule), Species Profile
purple loosestrife Lythrum salicaria 312 IAC 18-3-13, Species Profile, purple loosestrife
reed canarygrass Phalaris arundinacea 312 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 .