Main Content


Aquatic Invasive Species - Plants

Report aquatic invasive species

More information on these species can be found on the Indiana Invasive Species Council (IISC) Invasive Plant List.

Aquatic Plant Rule

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

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

Plants Restricted Under Other Rules

Scientific Name Common Name  More Information Report?
Lythrum salicaria purple loosestrife IC 14-24-12, Bulletin  
Phragmites australis common/giant reed 312 IAC 18-3-25 (Terrestrial Plant Rule), Bulletin  
Phalaris arundinacea reed canary grass 312 IAC 18-3-25 (Terrestrial Plant Rule), Bulletin  

Unrestricted Plants of Concern

Scientific Name Common Name  More Information Report?
Eihhornia crassipes floating water hyacinth Bulletin Y