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U.S. Invasive Weeds

Click on an accepted name below to view its Plant Profile with more information, and web links if available. Invasive plants that are synonyms are indented beneath the current PLANTS accepted name. You may view invasive lists by source by clicking on the source acronyms at the top of the report.

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NRCS Invasive Species policy
Invasive Species Executive Order 13112
List of Invasive PlantsScientific Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all
List of Invasive PlantsCommon Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all

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US Federal Noxious Weed List
STATE State noxious weed lists for 35 states
CalEPPC California Exotic Pest Plant Council, Exotic pest plant list
FLEPPC Florida Exotic Pest Plant Council, Invasive plant list
HEAR Hawaiian Ecosystems at Risk Project, Information index for selected alien plants in Hawaii
KY Weeds of Kentucky and adjacent states: A field guide
NE&GP Weeds of Nebraska and the Great Plains
N'EAST Weeds of the Northeast
SEEPPC Southeast Exotic Pest Plant Council, Invasive exotic pest plants in Tennessee
SWSS Southern Weed Science Society, Weeds of the United States and Canada
WI Wisconsin manual of control recommendations for ecologically invasive plants
WSWS Weeds of the West
Symbol Common Name Nativity
in US*		 US STATE CalEPPC FLEPPC HEAR KY NE&GP N'EAST SEEPPC SWSS WI WSWS
Scientific Name
Pacific Island silvergrass
MIFL3 Miscanthus floridulus I STATE
padang cassia
CIBU2 Cinnamomum burmannii I HEAR
paddy melon
CUMY Cucumis myriocarpus I STATE
paillotte
IMCY Imperata cylindrica I US STATE FLEPPC SWSS
painted euphorbia
EUHE4 Euphorbia heterophylla N SWSS
EUPR5 Euphorbia prunifolia STATE
pakopako
CYRO Cyperus rotundus I STATE SWSS WSWS
pale biddy-biddy
ACNO4 Acaena novae-zelandica I STATE
pale biddy-biddy
ACPA14 Acaena pallida XU STATE
pale dock
RUAL4 Rumex altissimus N STATE NE&GP;
pale madwort
ALAL3 Alyssum alyssoides I WSWS
pale smartweed
POLA4 Polygonum lapathifolium N NE&GP; SWSS WSWS
pale swallow-wort
CYRO8 Cynanchum rossicum I STATE
pale swallow-wort
CYVI3 Cynanchum vincetoxicum I
VIHI3 Vincetoxicum hirundinaria STATE
paleyellow iris
IRPS Iris pseudacorus I STATE CalEPPC
Palmer amaranth
AMPA Amaranthus palmeri N SWSS WSWS
palmgrass
SEPA6 Setaria palmifolia I HEAR
palmleaf morningglory
IPWR Ipomoea wrightii I SWSS
palpalum dilate
PADI3 Paspalum dilatatum I N'EAST SWSS WSWS
pampas grass
COSE4 Cortaderia selloana I CalEPPC HEAR
pampasgrass
COJU2 Cortaderia jubata I STATE CalEPPC HEAR
Panama rubber tree
CAEL5 Castilla elastica I FLEPPC
panic millet
PAMI2 Panicum miliaceum I STATE NE&GP; N'EAST SWSS WSWS
panic rampant
PARE3 Panicum repens N STATE FLEPPC
panic veldt grass
EHER Ehrharta erecta I CalEPPC
panicgrass
PACA6 Panicum capillare N NE&GP; N'EAST SWSS WSWS
panicled aster
SYDI2 Symphyotrichum divaricatum N
ASSUL Aster subulatus var. ligulatus NE&GP;
paper mulberry
BRPA4 Broussonetia papyrifera I SEEPPC
paperbark
MEQU Melaleuca quinquenervia I US STATE FLEPPC HEAR
Papuan wattle
ACAU Acacia auriculiformis I FLEPPC
para grass
URMU Urochloa mutica I FLEPPC
BRMU Brachiaria mutica HEAR
paraiso
MEAZ Melia azedarach I FLEPPC SEEPPC
parasol leaf tree
MATA3 Macaranga tanarius I HEAR
paroquet bur
TRRH Triumfetta rhomboidea N STATE
parrot feather
MYAQ2 Myriophyllum aquaticum I STATE CalEPPC SEEPPC
parsnip
PASA2 Pastinaca sativa I STATE KY NE&GP; SEEPPC WI
partridge pea
CHFAF Chamaecrista fasciculata var. fasciculata N
CAFA Cassia fasciculata KY NE&GP; SWSS
patata
MONU Monolepis nuttalliana N NE&GP;
path rush
JUTE Juncus tenuis N N'EAST
patota
MONU Monolepis nuttalliana N NE&GP;
peacocksplume
FAMO Falcataria moluccana I
PAFA8 Paraserianthes falcataria HEAR
pearl millet
PEGL2 Pennisetum glaucum I
SEGL2 Setaria glauca STATE NE&GP; N'EAST SWSS WSWS
pearlflower
HESU4 Heterocentron subtriplinervium I HEAR
pelican flower
ARLI5 Aristolochia littoralis XU FLEPPC
pengua
MAMA28 Macaranga mappa I HEAR
Pennsylvania knotweed
POPE2 Polygonum pensylvanicum N KY NE&GP; N'EAST SWSS
Pennsylvania pellitory
PAPE5 Parietaria pensylvanica N NE&GP;
Pennsylvania smartweed
POPE2 Polygonum pensylvanicum N KY NE&GP; N'EAST SWSS
penny mountain
THPRA Thymus praecox ssp. arcticus I
THSE Thymus serpyllum N'EAST
pennycress
THAR5 Thlaspi arvense I KY NE&GP; N'EAST SWSS WSWS
pennyroyal
MEPU Mentha pulegium I CalEPPC
pepper tree
SCMO Schinus molle I CalEPPC
peppergrass
CACH10 Cardaria chalapensis I STATE CalEPPC
peppergrass
CADR Cardaria draba I STATE CalEPPC NE&GP; SWSS WSWS
peppergrass
LEDE Lepidium densiflorum N NE&GP;
peppergrass
LEVI3 Lepidium virginicum N N'EAST SWSS
peppermint
MEPI Mentha �piperita I SEEPPC
peppermint
MEPU Mentha pulegium I CalEPPC
peppervine
AMAR5 Ampelopsis arborea N SWSS
perennial morningglory
COAR4 Convolvulus arvensis I STATE KY NE&GP; N'EAST SWSS WI WSWS
perennial pea
LALA4 Lathyrus latifolius I SWSS WSWS
perennial peavine
LALA4 Lathyrus latifolius I SWSS WSWS
perennial pepperweed
LELA2 Lepidium latifolium I STATE CalEPPC WSWS
perennial ragweed
AMPS Ambrosia psilostachya N NE&GP;
perennial snakeweed
GUSA2 Gutierrezia sarothrae N NE&GP; WSWS
perennial sowthistle
SOAR2 Sonchus arvensis I STATE N'EAST SWSS WSWS
perennial sowthistle
SOAS Sonchus asper I KY NE&GP; SWSS WSWS
perennial soybean
NEWI2 Neonotonia wightii I
GLWI2 Glycine wightii HEAR
perennial veldt grass
EHCA Ehrharta calycina I CalEPPC
periwinkle
VIMA Vinca major I CalEPPC SEEPPC
periwinkle
VIMI2 Vinca minor I SEEPPC WI
Persian speedwell
VEPE3 Veronica persica I KY WSWS
Peruvian apple
CEHI3 Cereus hildmannianus I
CEUR Cereus uruguayanus STATE
Peruvian peppertree
SCMO Schinus molle I CalEPPC
Peruvian torch
CEHI3 Cereus hildmannianus I
CEUR Cereus uruguayanus STATE
Philadelphia fleabane
ERPH Erigeron philadelphicus N SWSS
Philippine violet
ASGA2 Asystasia gangetica I FLEPPC
pickerel weed
MOVA Monochoria vaginalis I US STATE
pickerelweed
POCO14 Pontederia cordata N SWSS
pickpurse
SPAR Spergula arvensis I WSWS
pigeonberry
PHAM4 Phytolacca americana N KY NE&GP; N'EAST SWSS
pigeongrass
PEGL2 Pennisetum glaucum I
SEGL2 Setaria glauca STATE NE&GP; N'EAST SWSS WSWS
pigeongrass
SEVI4 Setaria viridis I STATE NE&GP; SEEPPC SWSS
pignut
HOGL2 Hoffmannseggia glauca N SWSS WSWS
HODE Hoffmannseggia densiflora STATE
pikake
JASA Jasminum sambac I FLEPPC
piku
FICA Ficus carica I CalEPPC
pilampwoia
ACCO Acacia confusa I HEAR
pilipiliula
CHAC Chrysopogon aciculatus I US STATE
pineappleweed
MADI6 Matricaria discoidea I
MAMA11 Matricaria matricarioides KY NE&GP; N'EAST SWSS WSWS
pineland threeseed mercury
ACOS Acalypha ostryifolia N KY SWSS
pink asphodel
ASFI2 Asphodelus fistulosus I US STATE
pinkfringe
ARCI2 Arthrostemma ciliatum I HEAR
pinklady
DIRO2 Dissotis rotundifolia I HEAR
pinnate tansymustard
DESO2 Descurainia sophia I STATE SWSS WSWS
pinweed
POPE2 Polygonum pensylvanicum N KY NE&GP; N'EAST SWSS
pirri-pirri bur
ACNO4 Acaena novae-zelandica I STATE
pistie
PIST2 Pistia stratiotes N STATE FLEPPC
pitchfork weed
BIFR Bidens frondosa N NE&GP; N'EAST
pitseed goosefoot
CHBE4 Chenopodium berlandieri N WSWS
pitted morningglory
IPLA Ipomoea lacunosa N KY N'EAST SWSS
plains beebalm
MOPE Monarda pectinata N NE&GP;
plains coreopsis
COTI3 Coreopsis tinctoria N NE&GP; SWSS
plains larkspur
DECAV2 Delphinium carolinianum ssp. virescens N
DEVI Delphinium virescens NE&GP;
plains pricklypear
OPPO Opuntia polyacantha N NE&GP; WSWS
plains snakecotton
FRFL Froelichia floridana N NE&GP;
Platte lupine
LUPL Lupinus plattensis N NE&GP;
Platte thistle
CICA11 Cirsium canescens N NE&GP; WSWS
plumajillo
ACMI2 Achillea millefolium NI KY NE&GP; N'EAST SWSS
plume poppy
BOFR2 Bocconia frutescens N STATE HEAR
plume-poppy
MACO10 Macleaya cordata I SEEPPC
plumeless thistle
CAAC Carduus acanthoides I STATE NE&GP; WI WSWS
plumeless thistle
CANU4 Carduus nutans I STATE KY NE&GP; N'EAST SEEPPC SWSS WI WSWS
pois rouge
ABPR3 Abrus precatorius N FLEPPC
poison hemlock
COMA2 Conium maculatum I STATE CalEPPC KY NE&GP; N'EAST SEEPPC SWSS WSWS
poison ivy
TOPU2 Toxicodendron pubescens N
RHTO8 Rhus toxicodendron STATE
poison ivy
TORA2 Toxicodendron radicans N STATE N'EAST SWSS WSWS
poison ivy
TORAR Toxicodendron radicans ssp. radicans N
RHRA6 Rhus radicans KY
poison ivy
TORY Toxicodendron rydbergii N NE&GP;
poison milkweed
ASSU2 Asclepias subverticillata N WSWS
poison parsley
COMA2 Conium maculatum I STATE CalEPPC KY NE&GP; N'EAST SEEPPC SWSS WSWS
poison parsnip
CIMA2 Cicuta maculata N STATE NE&GP;
poison sumac
TOVE Toxicodendron vernix N STATE
pokeberry
PHAM4 Phytolacca americana N KY NE&GP; N'EAST SWSS
pokeweed
PHAM4 Phytolacca americana N KY NE&GP; N'EAST SWSS
polar hawkweed
HIAT2 Hieracium atratum XU STATE
policeman�s helmet
IMGL Impatiens glandulifera I STATE
pomea
ADPA Adenanthera pavonina I FLEPPC
pony beebalm
MOPE Monarda pectinata N NE&GP;
poorjoe
DITE2 Diodia teres N KY
poorland flatsedge
CYCO Cyperus compressus N SWSS
poorman's pepper
LEVI3 Lepidium virginicum N N'EAST SWSS
popcorn tree
TRSE6 Triadica sebifera I
SASE5 Sapium sebiferum STATE CalEPPC FLEPPC
popinac
ACFA Acacia farnesiana N HEAR
poppy
PADU Papaver dubium I SEEPPC
porcelainberry
AMBR7 Ampelopsis brevipedunculata I WI
Port Jackson fig
FIRU4 Ficus rubiginosa I HEAR
Portugese broom
CYST7 Cytisus striatus I STATE CalEPPC
pot
CASA3 Cannabis sativa I STATE NE&GP; SWSS WSWS
pothos
EPPI Epipremnum pinnatum I FLEPPC
poverty brome
BRST2 Bromus sterilis I SEEPPC
poverty dropseed
SPVA Sporobolus vaginiflorus N NE&GP;
poverty grass
SPVA Sporobolus vaginiflorus N NE&GP;
poverty rush
JUTE Juncus tenuis N N'EAST
poverty sumpweed
IVAX Iva axillaris N STATE NE&GP; WSWS
poverty weed
IVAX Iva axillaris N STATE NE&GP; WSWS
povertyweed
MONU Monolepis nuttalliana N NE&GP;
Powell amaranth
AMPO2 Amaranthus powellii N N'EAST SWSS
prairie blueviolet
VINE Viola nephrophylla N
VIPR5 Viola pratincola NE&GP;
prairie broomweed
AMDR Amphiachyris dracunculoides N
GUDR2 Gutierrezia dracunculoides SWSS
prairie bundleflower
DEIL Desmanthus illinoensis N SWSS
prairie cupgrass
ERCO8 Eriochloa contracta N SWSS
prairie fleabane
ERST3 Erigeron strigosus N NE&GP;
prairie froelichia
FRFL Froelichia floridana N NE&GP;
prairie goldenrod
SOMI2 Solidago missouriensis N NE&GP;
prairie larkspur
DECAV2 Delphinium carolinianum ssp. virescens N
DEVI Delphinium virescens NE&GP;
prairie onion
ALTE Allium textile N WSWS
prairie rose
ROAR3 Rosa arkansana N NE&GP;
prairie sage
ARLU Artemisia ludoviciana N NE&GP;
prairie sagewort
ARFR4 Artemisia frigida N NE&GP; WSWS
prairie sunflower
HEPE Helianthus petiolaris N SWSS
prairie thermopsis
THRH Thermopsis rhombifolia N WSWS
prairie thistle
CICA11 Cirsium canescens N NE&GP; WSWS
prairie threeawn
AROL Aristida oligantha N NE&GP;
prairie wildrose
ROAR3 Rosa arkansana N NE&GP;
precatory bean
ABPR3 Abrus precatorius N FLEPPC
prickly comfrey
SYAS Symphytum asperum I STATE
prickly fanpetals
SISP Sida spinosa N KY N'EAST SWSS
prickly Florida blackberry
RUAR2 Rubus argutus N STATE HEAR N'EAST
prickly lettuce
LASE Lactuca serriola I KY NE&GP; N'EAST SWSS WSWS
prickly Russian thistle
SATR12 Salsola tragus I STATE
SAIB Salsola iberica STATE NE&GP; SWSS WSWS
prickly sida
SISP Sida spinosa N KY N'EAST SWSS
prickly solanum
SOTO4 Solanum torvum N US STATE FLEPPC WSWS
prickly sowthistle
SOAS Sonchus asper I KY NE&GP; SWSS WSWS
pride of India
MEAZ Melia azedarach I FLEPPC SEEPPC
Prince's feather
POOR2 Polygonum orientale I SEEPPC
princess tree
PATO2 Paulownia tomentosa I SEEPPC
princessflower
TIUR Tibouchina urvilleana I HEAR
procumbent pearlwort
SAPR Sagina procumbens I N'EAST
proso
PAMI2 Panicum miliaceum I STATE NE&GP; N'EAST SWSS WSWS
prostrate knotweed
POAR11 Polygonum arenastrum I NE&GP;
prostrate knotweed
POAV Polygonum aviculare I KY N'EAST SWSS WSWS
prostrate pigweed
AMBL Amaranthus blitoides I NE&GP; N'EAST SWSS WSWS
prostrate spurge
CHMA15 Chamaesyce maculata N
EUMA7 Euphorbia maculata NE&GP; N'EAST SWSS
prostrate vervain
VEBR Verbena bracteata N NE&GP; SWSS WSWS
puakatau
MEMI2 Melinis minutiflora I FLEPPC HEAR
puakatau
URMU Urochloa mutica I FLEPPC
pualele
SOOL Sonchus oleraceus I N'EAST SWSS WSWS
puccoon
BUAR3 Buglossoides arvensis I SEEPPC
LIAR4 Lithospermum arvense KY NE&GP; SWSS WSWS
puero
PUPH2 Pueraria phaseoloides I STATE
puk-soh
PEPU2 Pennisetum purpureum I FLEPPC
pullout grass
VUOC Vulpia octoflora N NE&GP;
puluvao
CAEL5 Castilla elastica I FLEPPC
punagrass
ACBR5 Achnatherum brachychaetum I STATE
STBR3 Stipa brachychaeta STATE
puncture vine
TRCI2 Tribulus cistoides I FLEPPC
puncturevine
TRTE Tribulus terrestris I STATE NE&GP; SEEPPC SWSS WSWS
punktree
MEQU Melaleuca quinquenervia I US STATE FLEPPC HEAR
purple ammannia
AMCO Ammannia coccinea N SWSS
purple aster
MACA2 Machaeranthera canescens N WSWS
purple cockle
AGGI Agrostemma githago I STATE N'EAST WSWS
purple crabgrass
DISA Digitaria sanguinalis N KY NE&GP; N'EAST SWSS WSWS
purple crownvetch
COVA2 Coronilla varia I SEEPPC WI
purple cudweed
GAPU3 Gamochaeta purpurea N
GNPU2 Gnaphalium purpureum N'EAST
purple deadnettle
LAPU2 Lamium purpureum I WSWS
purple deadnettle
LAPUI Lamium purpureum var. incisum I SWSS
purple false brome
BRDI2 Brachypodium distachyon I CalEPPC
purple foxglove
DIPU Digitalis purpurea I WSWS
purple granadilla
PAED Passiflora edulis I HEAR
purple guava
PSCA Psidium cattleianum I FLEPPC HEAR
purple locoweed
ASMO7 Astragalus mollissimus N NE&GP;
purple locoweed
OXLA3 Oxytropis lambertii N NE&GP;
purple loosestrife
LYSA2 Lythrum salicaria I STATE CalEPPC NE&GP; N'EAST SEEPPC SWSS WI WSWS
purple loosestrife
LYTHR Lythrum STATE
purple lovegrass
ERSP Eragrostis spectabilis N NE&GP;
purple lythrum
LYSA2 Lythrum salicaria I STATE CalEPPC NE&GP; N'EAST SEEPPC SWSS WI WSWS
purple mustard
CHTE2 Chorispora tenella I STATE NE&GP; SWSS WSWS
purple nutsedge
CYRO Cyperus rotundus I STATE SWSS WSWS
purple orchid tree
BAVA Bauhinia variegata I FLEPPC
purple pampasgrass
COJU2 Cortaderia jubata I STATE CalEPPC HEAR
purple passionflower
PAIN6 Passiflora incarnata N KY SWSS
purple poppymallow
CAIN2 Callirhoe involucrata N NE&GP;
purple starthistle
CECA2 Centaurea calcitrapa I STATE
purple threeawn
ARPU9 Aristida purpurea N NE&GP;
purple top
HYPE3 Hyptis pectinata N? STATE
purslane speedwell
VEPE2 Veronica peregrina N WSWS
pursley
POOL Portulaca oleracea N STATE HEAR KY NE&GP; N'EAST SWSS WSWS
pusley
POOL Portulaca oleracea N STATE HEAR KY NE&GP; N'EAST SWSS WSWS
Pyrenees star of Bethlehem
ORUM Ornithogalum umbellatum I STATE KY N'EAST SEEPPC
*N =Native, N? =probably native, NI=some populations native, some introduced, I =Introduced, I? =probably introduced, XU = Not in US or cultivated, ? =unknown.
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