IWGS

REGULATED and PROHIBITED AQUATIC PLANTS
Combined State and Federal Lists
 as of 5/20/2015

 

FED = Federal Noxious Weed List (entries are highlighted)
p = permit required  
q = quarantine required  
Frequently offered in the trade  
New Changes listen in red  

Click here for a PDF Copy of List

Scientific Name

Common Name States and/or Federal
     
Aeschynomene indica Indian Jointvetch

  HI

Aeschynomene rudis

Rough Jointvetch   CA

Aeschynomene virginica

Curly Indigo   AR

Alternanthera philoxeroides

Alligatorweed   AL, AZ, AR, CA, FL, PR, SC, TX

Alternanthera sessilis

Sessile Joyweed   CA, FL, MA, PR

Alternanthera spp.

Joyweed   AR, PR

Arundo donax

Mediterranean Reed   CA, NE, TX, WI

Azolla pinnata

 

Mosquito Fern, Water Velvet   FED; ID, IL, IN, MA, MN, OK, OR, WI, WV

Bacopa spp.

Waterhyssop   PR

Brasenia schreberi

Watershield   PR

Butomus umbellatus

Flowering Rush

  CT, ID, IL, IN, MI, MN, MT, NE, NH, OR, SD county regulated, VT, WA, WI

Cabomba caroliniana Purple Fanwort

  CA, CT, ID, MA, ME, MI, MN regulated, NH, NY, PR, VT, WA, WI

Cabomba spp.

Fanwort   PR

Callitriche stagnalis

Pond Water-Starwort   CT

Calotropis procera

Giant Milkweed   PR

Canna flaccida

Canna   PR

Cardamine impatiens

    MN, NY, Canada, WI

Casuarina spp.

Australian Pine   FL
Caulerpa taxifolia Mediterranean Caul. clone

  FED; IN, IL, MA, MD, MN, OK, OR, WV

   

  "Calif Fish and Game Code Sec 2300 bans Caulerpa:taxifolia,     cupressoides, mexicana, sertulariodes, floridana,ashmeadii, racemosa, verticillata, and scapelliformis"these spp are regulated under a different law than most CA noxious weeds.

 

Cephalanthus occidentalis

 

Buttonbush   PR

Ceratophyllum demersum

Coontail   PR

Ceratophyllum spp.

Coontail   PR

Ceratopteris thalictroides

Watersprite   CA

Cicuta maculata

Water Hemlock   NV

Colocasia esculenta

Wild Taro   PR

Colocasia spp.

Taro   HI (p) (q)

Crassula helmsii

Swamp Stonecrop

  FL, MN, NC, WA, WI, Canada

Crinum americanum

Swamp Lily   PR

Cylindrospermopsis raciborskii

Cyanobacteria   MI, WI (possible contaminant on aquatic plants)

Cyperus esculentus

Yellow Nutsedge   CA, CO, HI, MI, OR, WA

Cyperus odoratus

Flatsedge   PR

Cyperus rotundus

Purple Nutsedge   AR, CA, OR

Cyperus spp.

Nutgrass   RI

Didymosphenia geminata

Didymo or Rock Snot   NE, WI (possible contaminent on aquatic plants)

Egeria (Elodea) densa

Brazilian Elodea

  AL, CA, CT, ID, IL, IN, MA, ME, MI, MN regulated, MS, NE, NH, NY,  OR, PR, SC, VT, WA, WI

Egeria najas

    CA
Eichhornia azurea

Anchored Waterhyacinth

  FED; AR, AZ, IL, IN, LA, MA, MN, MS, OK, OR, TX, WI, WV

Eichhornia crassipes Waterhyacinth

  AL, AR, AZ, CA county regulated, LA, MS, NE, PR, SC, TX, City of Chicago, WI

Eichhornia spp.

Waterhyacinth   FL, PR

Eleocharis baldwinii

Slender Spikerush   PR

Eleocharis spp.

Spikerush   PR

Elodea canadensis

Common Elodea   LA, ME

Epilobium hirsutum

Hairy Willow Herb   MA, WA, WI

Equisetum telmateia

Giant Horsetail   OR

Fallopia japonica

Japanese Knotweed

  MI,NE regulated, NY, VT, WY county regulated

Fatoua villosa (Thunb.) Nakai

mulberryweed, hairy crabweed  

Frangula alnus

Smooth Buckthorn   NY

Glossostigma diandrum

Mud Mat   OK, WA

Glyceria maxima

Manna Grass   MA, NY, WA, WI

Haplotyme

    SD county regulated

Heracleum mantegazzianum

Giant Hogweed   FED; FL, ID, MA, MI, MN, NY, WI, WV

Houttuynia cordata

    City of Chicago

Houttuynia cordata 'Variegata'

Chameleon Plant   City of Chicago
Hydrilla verticillata Hydrilla

  FED; AZ, CA, CO, CT, FL, ID, IN, IL, LA, MA, ME, MI, MN, MS, MT, NE, NH, NV, NY, OK, OR, PR, SC, TX, VT, WA, WI, WV, WY, Canada

Hydrocharis morsus-ranae

Frogbit   CA, ID, IL, IN, ME, MI, MN, NH, NY, VT, WA, WI

Hydrocotyle spp.

Pennywort   PR

Hydrocotyle ranunculoides

Floating Marsh Pennywort   WI

Hydrocotyle umbellata

Water Pennywort   PR

Hygrophila polysperma

Hygrophila, Miramar weed

  FED; CA, FL, IL, IN, MA, MN, OK, OR, VT, WI, WV

Ipomoea aquatica

Chinese Waterspinach   FED; FL, IL, IN, MA, MN regulated, OK, TX, WI, WV

Ipomoea fistulosa

Bush Morningglory   FL

Ipomoea spp.

Morningglory   AZ, AR, MI, PR
Ipomoea triloba Threelobe Morningglory   AZ, FL, PR

Iris pseudacorus

Yellow Flag Iris

  CT, ID, IL, IN, MA, MN regulated, MT, NY, OR, VT, WA, Canada

Iris virginica

Blue Flag   PR

Juncus effusus

Soft Rush   PR

Lachnanthes caroliniana

Redroot   PR

Lagarosiphon major

Oxygen weed

  FED; CA, IL, IN, MA, MI, MN, OK, OR, TX, WA, WI, WV

Lagarosiphon spp.

African Elodea   FL, LA, MI, NC, OK

Lemna valdiviana

Valdivia Duckweed   PR

Limnobium laevigatum

Sponge Plant   CA

Limnobium spongia

American Frogbit   CA, PR

Limnocharis flava

Sawah Flowering Rush, Velvet Leaf

  FL

Limnophila indica

Ambulia   CA, Canada

Limnophila sessiliflora

Ambulia

  FED; CA, FL, IL, IN, MA, MN, OK, OR, WI, WV, Canada

Ludwigia alternifolia

Bushy Waterprimrose

  PR

Ludwigia grandiflora

Uruguayan Primrose Willow

  NY, Canada

Ludwigia hexapetala

Uruguay Waterprimrose

  NC, NY, SC, WA

Ludwigia peploides

Water Primrose   NY, WA

Ludwigia peruviana

Water Primrose   CA, Canada
Ludwigia repens

Floating Waterprimrose

  PR

Ludwigia spp.

Waterprimrose   PR

Ludwigia uruguayensis

Uruguay Waterprimrose

  NC, SC

Luziola fluitans

Southern Watergrass   PR

Lysimachia nummularia

Creeping Jenny   MA, Long Island NY, Canada

Lysimachia vulgaris

Garden Loosestrife   CT, NY, WA

Lythrum alatum

Winged Loosestrife   NH, TN
Lythrum salicaria Purple Loosestrife

AL, AZ, AR, CA, CO, CT, FL, ID, IL, IA, LA, MA, MI, MN, MO, MT, NC, NE, NV, NH, ND, NY, OH, OK, OR, PA, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY, City of Chicago

Lythrum spp. (not native to specific state)

Loosestrife   AR, MI, MN, MT, NC, NE, PA, TN, WI

Lythrum virgatum

Wand Loosestrife   IA, MN, MT, NE, NV, NH, ND, SD, TN, WI, WA

Marsilea minuta

Dwarf Four Leaf Clover

  OK

Marsilea mutica

Variegated Four Leaf Clover

  OK

Marsilea quadrifolia

Four Leaf Clover   CT, OK, Canada

Mechamandra alternifolia

    FL

Melaleuca quinquenervia

Melaleuca   FL, LA, MA,MN, MS, NC, OK, TX

Mentha aquatica

Aquatic Mint   ID(q), MT(q), NE(q), WY(q)

Micranthemem umbrosum

Globifera   PR

Mimosa pigra

Giant Sensitive Plant   FL

Miscanthus floridulus

Miscanthus   HI

Miscanthus sacchariflorus

Silver Grass   MA

Miscanthus sinensis

Chinese Silver Grass   NY

Monochoria hastata

Monochoria   FED; FL, IL, IN, MA, MN, OK, OR, WV

Monochoria vaginalis

Pickerelweed   FED; FL, IL, IN, MA, MN, WV

Murdannia keisak

Marsh Dew Flower   NY, WA

Myosotis scorpioides

Forget-me-not   CT, MA

Myosoton aquaticum

Giant Chickweed   CA
Myriophyllum aquaticum Parrotfeather

  AL, CA county regulated, CT, ID, IL, IN, MA ,ME, MI,MN regulated, NE, NH, NY, OR, VT, WA, WI, PR, Canada

Myriophyllum heterophyllum

Variableleaf Watermilfoil

  CT, ID, MA, ME, NH, NY, VT, WA

Myriophyllum pinnatum

Broadleaf Water Milfoil   ME, Long Island NY

Myriophyllum proserpinacoides

    ME

Myriophyllum spicatum

Eurasian Watermilfoil

AL, CA, CO, CT, FL, ID, IL, IN, LA, MA, ME, MI, MN, MS, MT, NH, NC, NE, NV, NY, OR, PR, SC, SD, TX, VT, WA, WI, WY

Myriophyllum spp.

Milfoil   ME, PR

Najas marina

Marine Naiad   CT

Najas minor

Slender-Leaved Naiad

  CT, IL, IN, LA, MA, ME, MN, NC, NE, NH, SC, WA, WI, Canada

Nechamandra alternifolia

nechamandra   FL

Nelumbo lutea

American Lotus   CT, PR

Nelumbo nucifera

Sacred Lotus   WI

Nitellopsis obtusa

Starry Stonewort   MI, WI

Nuphar luteum

Spatterdock   PR

Nymphaea mexicana

Banana Waterlily   CA, PR
Nymphaea odorata Fragrant Waterlily   CA, PR

Nymphaea spp.

Waterlily   CA county regulated
   

MN regulated - nonnative waterlilies (Nymphaeaspp.) Linnaeus, or any variety, hybrid, or cultivar thereof. Native Minnesota waterlilies are: Nymphaea odorataAiton subsp. odorata Aiton, N. leibergii Morong, and N. odorataAiton subsp. tuberosa (Paine) Wiersema & Hellquist

Nymphoides cristata

Crested Floating Heart   FL, NC

Nymphoides indica

Water Snowflake   NC
Nymphoides peltata Yellow Floating Heart

CT, FL, ID, IL, IN, MA, ME, MI, NC, NE, NH, NY, OR, VT, WA, WI, Canada

Oenanthe javanica

Water Celery   WI

Orontium aquaticum

Goldenclub   PR

Oryza rufipogon

Wild Red Rice   CA, FL, MN

Oryza sativa var.

Red Rice   AR

Ottelia alismoides

Duck-lettuce   FED; IL, IN, MN, OK, WI, WV

Panicum antidotale

Blue Panicgrass   CA

Panicum hemitomon

Maidencane   PR

Panicum miliaceum

Wild Proso Millet   CO, OR

Panicum repens

Torpedo Grass   AL, AZ, HI, LA, TX

Peltandra virginica

Arrow-arum   PR

Petasites hybridus

Butterfly Dock   WI

Phalaris arundinacea

Reed Canary Grass   MA, Long Island NY, WI regulated
Phragmites australis Common Reed

  AL, CT, ID, MA, MI, MN, NC, NE, NH, NY, OR, PR, SC, SD county regulated, VT, WI

Phragmites australis aurea

Variegated Dwarf Common Reed

  CT, MA, MI, NC, VT

Phragmites australis 'Candy Stripe'

Candy Stripe Reed   CT, MA, MI, NC, VT

Phragmites australis ssp. Australis

Common Reed Grass   NE regulated, NY

Phragmites communis

Common Reed   CT, NC, SC, NH

Pistia spp.

Water Lettuce   SC
Pistia stratiotes Waterlettuce

  AL, CA county regulated, FL, LA, MS, PR, SC, TX, WI

Polygonum x bohemicum

Bohemian Knotweed   ID, Long Island NY, WA

Polygonum cuspidatum

Japanese Knotweed

  AL, CA, CO, ID, MA, MN, Long Island NY, OR, WA, WI, WV

Polygonum perfoliatum

Mile-a-minute   MA, NC, Long Island NY, OH, PA, WI, WV

Polygonum polystachyum

Himalayan Knotweed   CA, OR, WA
Polygonum sachalinense Giant Knotweed

  CA, CO, ID, MN, Long Island NY, OR, SD, county regulated, WA, WI

Polygonum spp.

Knotweed   MT, PR
Pontederia cordata Pickerelweed

CA (Pontederia cordata is not prohibited in CA however they do not want it and will exercise their right of refusal and destroy all shipments in entirety when found), PR

Pontederia rotundifolia

Tropical Pickerelweed   FL

Pontederia spp.

Pickerelweed   LA
Potamogeton crispus Curly Leaf Pondweed

  AL, CT, ID, IL, IN, MA, ME, MI, MN, MT, NE, NH, NY, VT, WI

Potamogeton illinoensis

Illinois Pondweed   PR

Potamogeton pectinatus

Sago Pondweed   PR

Potamogeton spp.

Pondweed   PR
Potentilla recta Sulfur Cinquefoil

  CA, CO, MT, NV, OR, SD county regulated, WA, WY county regulated

Ranunculus acris

Tall Buttercup   MT

Ranunculus ficaria

Lesser celandine   NY, OR, WI

Ranunculus lingua

Greater Spearwort   City of Chicago

Rorippa amphibia

Water Yellowcress   MA

Rorippa microphylla

Oneroe Yellowcress   CT

Rorippa nasturtium-aquaticum

Watercress   CT

Rotala rotundifolia

roundleaf rotala   CA

Rumex spp.

Water Dock   AR

Sagittaria graminea

Slender Arrowhead

  PR, WA

Sagittaria lancifolia

Lanceleaf Arrowhead

  PR

Sagittaria latifolia

Common Arrowhead   PR

Sagittaria platphylla

Delta Arrowhead   WA

Sagittaria sagittifolia

Arrowhead   FED; IL, IN, MA, MN, NC, OK, WI, WV, Canada

Sagittaria spp.

Arrowhead   PR

Salvinia auriculata

Salvinia   FED; CA, IL, IN, MA, MI, MN, OK, VT, WV

Salvinia biloba

Giant Salvinia   FED; CA, IL, IN, MA, MN, OK, VT, WV

Salvinia herzogii

Giant Salvinia   FED; CA, IL, IN, MA, MI, MN, OK, VT, WI, WV

Salvinia minima

Water Spangles   Canada
Salvinia molesta Giant Salvinia

  FED; AR, AZ, CA, CO, CT, ID, IL, IN, MA, MD, MI, MN, MS, NE, NV, OK, OR, TN, VT, WI, WV

Salvinia spp. Waterfern

  FL (excludes S. minima), LA, MI, NC (excludes S. minima), OR, PR, TX

Saururus cernuus

Lizardstail   PR

Schinus terebinthifolius

Brazilian-pepper   FL

Schoenoplectus mucronatus

Ricefield Bulrush   WA

Scirpus spp.

Bulrush   PR

Sesbania punicea

Scarlet Wisteria   CA

Solanum cardiophyllum

Heartleaf Nightshade   CA

Solanum carolinense

Horsenettle   AZ, AR, AK, CA, HI, IA, MI, MN, NV

Solanum dimidiatum

Torrey's Nightshade   CA

Solanum elaeagnifolium

White Horsenettle   AR, CA, MI, NV

Solanum nigrum

Black Nightshade   CO, MI

Solanum rostratum

Buffalobur   ID, WY county regulated

Solanum tampicense

Wetland Nightshade

  FED; FL, MA, MI, MN, OK, WV

Solidago sempervirens

Seaside Goldenrod   WI

Sparganium erectum

Exotic Bur Reed   FED; FL, IL, IN, MA, MN, OK, WV

Spartina alterniflora

Smooth Cordgrass   CA, OR, WA

Spartina anglica

Common Cordgrass   CA, OR, WA

Spartina densiflora

Spartina… CA, OR, WA

Spartina patens

Saltmeadow Cordgrass CA, OR, WA

Spirodela oligorhiza

Giant Duckweed LA, TX

Spirodela polyrhiza

Giant Duckweed PR

Stachys floridana

Florida Betony NC

Stratiotes aloides

Water-aloe FED;  AL, FL, MN, SC, WA, WI, WV

Thalia geniculata

Bent Alligator-Flag PR

Trapa bicornus

Water Caltrap WA
Trapa natans Water Chestnut

AL, AZ, CT, ID, IL, IN, MA, ME, MI, MN, NH, NY, OR, SC, VT, WA, WI, Canada

Trapa spp.

Water Chestnut FL, LA, MI, NC

Typha angustifolia

Narrow-Leaf Cattail IN, WI

Typha domingensis

Southern Cattail WI

Typha laxmannii

Graceful Cattail WI

Typha x glauca

Cattail Hybrid WI

Typha spp.

Cattail PR

Utricularia foliosa

Leafy Bladderwort PR

Utricularia inflata

Swollen Bladderwort WA

Utricularia spp.

Bladderwort PR

Vossia cuspidata

Hippo Grass FL

Zizania aquatica

Annual Wildrice PR

Zostera japonica

Japanese Eelgrass CA
NOTES    
MN Regulated= Legal to posess, sell, buy, and transport regulated invasive species, but they may not be introduced into a free-living state, such as being released or planted in public waters.
     
Genus spp. listing indicates any / all subspecies are prohibited. For example Typha spp. = any / all Cattails are prohibited in PR. 
     

Compiled from Federal and State confirmed lists, available online or provided by State agencies.

Currently accepted names are from the Germplasm Resources Information Network (GRIN) database, USDA, ARS, USDA Plants Database, and Weed Science Society of America Composite List of Weed.

List excludes weeds designated as "Control is county option" but noted if known.

FL, NC, SC (as well as many other states) also adopt the list of Federal Noxious Weeds

MN also adopts the list of Federal Aquatic Noxious Weeds

 

PR (Puerto Rico) is also regulated as a state.

Seed Regulatory information can be found at the link below.  
http://bit.ly/USDAseeds    
     
     
Please send updates to kelly@marylandaquatic.com     
     
Compiled by
Kelly Billing, Maryland Aquatic Nurseries, Inc.