Legislation
2022
"An Act Establishing an Office of Aquatic Invasive Species"
2009
Public Act 09-52: "An Act Implementing the recommendations of the Invasive Plant Council" removed the ban on water lettuce and allowed movement of invasive species for eradication, research or educational purposes.
2004
Public Act 04-203: "An Act Concerning Fines for Banned Invasive Plants" declares that "no person shall import, move, sell, purchase, possess, transplant, cultivate or distribute," plants on the banned plants list.
2003
Public Act 03-136: "An Act Concerning Invasive Plants" establishes the Connecticut Invasive Plants Council. It is comprised of scientists, the nursery and growers industry, nonprofits, and state agency representatives. The Council has produced a Connecticut invasive plant list, which includes the aquatic plants in the table below. The Council also recommended to the joint standing Environment Committee of the General Assembly a similar list of plants to be banned.
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Invasive and Potentially Invasive Aquatic Plants
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Common Name
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Scientific Name
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Invasive
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Potentially Invasive
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American water lotus
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Nelumbo lutea (Willd.) Pers.
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X
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Brazilian water-weed, Anacharis, Egeria
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Egeria densa Planchon
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X
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Brittle water-nymph, Minor naiad
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Najas minor All.
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X
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Common water-hyacinth*
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Eichhornia crassipes (Mart.) Solms
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X
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Curly leaf pondweed, Crispy-leaved pondweed
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Potamogeton crispus L.
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X
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Eurasian watermilfoil
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Myriophyllum spicatum L.
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X
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European waterclover, Water shamrock
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Marsilea quadrifolia L.
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X
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Fanwort
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Cabomba caroliniana A. Gray
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X
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Flowering rush
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Butomus umbellatus L.
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X
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Forget-me-not, Water scorpion-grass
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Myosotis scorpiodes L.
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X
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Giant salvinia
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Salvinia molesta Mitchell
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X
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Hydrilla
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Hydrilla verticillata (L.f.) Royle
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X
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Onerow yellowcress
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Rorippa microphylla (Boenn. Ex. Rchb.)
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X
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Parrotfeather
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Myriophyllum aquaticum (Vell.) Verdc.
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X
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Pond water-starwort
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Callitriche stagnalis Scop.
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X
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Purple loosestrife
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Lythrum salicaria L.
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X
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Variable-leaf watermilfoil
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Myriophyllum heterophyllum Michx.
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X
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Water chestnut
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Trapa natans L.
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X
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Water lettuce*
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Pistia stratiotes L.
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X
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Watercress
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Roripa nasturtium-aquaticum W.T. Aiton
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X
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Yellow floating heart
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Nymphoides peltata (S.G. Gmel.) Kuntze
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X
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Yellow iris, Yellow flag iris
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Iris pseudocorus L.
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X
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*plants that are not banned
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