Legislation

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     The Connecticut Invasive Plants Council was established in 2003 by Public Act 03-136: "An Act Concerning Invasive Plants." It is comprised of scientists, the nursery and growers industry, nonprofits and state agency representatives.  The Connecticut Agricultural Experiment Station is represented on the Connecticut Invasive Plants Council by Director Dr. Louis A. Magnarelli.  The Council has produced a Connecticut invasive plant list (54.4 KB, .pdf format*), 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.  In 2004 the General Assembly passed Public Act 04-203: "An Act Concerning Fines for Banned Invasive Plants," which declared that, "no person shall import, move, sell, purchase, possess, transplant, cultivate or distribute," plants on the list.  Effective July 1, 2009, Public Act 09-52 (121.2 KB, .pdf format*) removed the ban on water lettuce and allowed movement of invasive species for eradication, research or educational purposes.

 

Invasive and Potentially Invasive Aquatic Plants
Common Name
Scientific Name
Invasive
Potentially Invasive
American water lotus
Nelumbo lutea (Willd.) Pers.
X
Brazilian water-weed, Anacharis, Egeria
Egeria densa Planchon
X
Brittle water-nymph, Minor naiad
Najas minor All.
X
Common water-hyacinth*
Eichhornia crassipes (Mart.) Solms
X
Curly leaf pondweed, Crispy-leaved pondweed
Potamogeton crispus L.
X
Eurasian watermilfoil
Myriophyllum spicatum L.
X
European waterclover, Water shamrock
Marsilea quadrifolia L.
X
Fanwort
Cabomba caroliniana A. Gray
X
Flowering rush
Butomus umbellatus L.
X
Forget-me-not, Water scorpion-grass
Myosotis scorpiodes L.
X
Giant salvinia
Salvinia molesta Mitchell
X
Hydrilla
Hydrilla verticillata (L.f.) Royle
X
Onerow yellowcress
Rorippa microphylla (Boenn. Ex. Rchb.)
X
Parrotfeather
Myriophyllum aquaticum (Vell.) Verdc.
X
Pond water-starwort
Callitriche stagnalis Scop.
X
Purple loosestrife
Lythrum salicaria L.
X
Variable-leaf watermilfoil
Myriophyllum heterophyllum Michx.
X
Water chestnut
Trapa natans L.
X
Water lettuce*
Pistia stratiotes L.
X
Watercress
Roripa nasturtium-aquaticum W.T. Aiton
X
Yellow floating heart
Nymphoides peltata (S.G. Gmel.) Kuntze
X
Yellow iris, Yellow flag iris
Iris pseudocorus L.
X
*plants that are not banned