Invasive & noxious plant laws by state

Each page lists the plants named in that state's official noxious-weed or prohibited-invasive-plant law, copied from the primary source and linked to it. The plant checker works for every state listed here. Native status comes from official state flora checklists for Pennsylvania (PA Natural Heritage Program), Florida (Atlas of Florida Plants) and New York (New York Flora Atlas). Other states fall back to USDA PLANTS distribution: native to the lower 48 and recorded in that state. Every state is also bound by the federal noxious weed list.

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. We only publish a state once its list is checked against the official source.

Federal noxious weeds (183 names)

Scientific name	Common name / notes
Acacia nilotica
Ageratina adenophora
Ageratina riparia
Alternanthera sessilis
Aquatic and
Arctotheca calendula
Asphodelus fistulosus
Avena ludoviciana
Avena sterilis
Azolla pinnata
Bentham var
Beyrich ex
Carthamus oxyacantha
Caulerpa taxifolia
Chrysopogon aciculatus
Commelina benghalensis
Crupina vulgaris
Cuscuta americana
Cuscuta applanata
Cuscuta approximata
Cuscuta attenuata
Cuscuta boldinghii
Cuscuta brachycalyx
Cuscuta californica
Cuscuta campestris
Cuscuta cassytoides
Cuscuta ceanothi
Cuscuta cephalanthi
Cuscuta compacta
Cuscuta coryli
Cuscuta cuspidata
Cuscuta decipiens
Cuscuta dentatasquamata
Cuscuta denticulata
Cuscuta epilinum
Cuscuta epithymum
Cuscuta erosa
Cuscuta europaea
Cuscuta exaltata
Cuscuta fasciculata
Cuscuta glabrior
Cuscuta globulosa
Cuscuta glomerata
Cuscuta gronovii
Cuscuta harperi
Cuscuta howelliana
Cuscuta indecora
Cuscuta leptantha
Cuscuta mitriformis
Cuscuta obtusiflora
Cuscuta odontolepis
Cuscuta pentagona
Cuscuta planiflora
Cuscuta plattensis
Cuscuta polygonorum
Cuscuta rostrata
Cuscuta runyonii
Cuscuta salina
Cuscuta sandwichiana
Cuscuta squamata
Cuscuta suaveolens
Cuscuta suksdorfii
Cuscuta tuberculata
Cuscuta umbellata
Cuscuta umbrosa
Cuscuta veatchii
Cuscuta warneri
Digitaria abyssinica
Digitaria velutina
Drymaria arenariodes
Eichhornia azurea
Emex australis
Emex spinosa
Euphorbia terracina
Galega officinalis
Geyer ex
Gillies ex
Heracleum mantegazzianum
Hochstetter ex
Hydrilla verticillata
Hygrophila polysperma
Imperata brasiliensis
Imperata cylindrica
Inula britannica
Ipomoea aquatica
Ischaemum rugosum
Kotschy ex
Lagarosiphon major
Leptochloa chinensis
Limnophila sessiliflora
Linneaus var
Lycium ferocissimum
Lygodium flexuosum
Lygodium microphyllum
Melaleuca quinquenervia
Melastoma malabathricum
Mikania cordata
Mikania micrantha
Mimosa diplotricha
Mimosa pigra
Monochoria hastata
Monochoria vaginalis
Moraea collina
Moraea flaccida
Moraea miniata
Moraea ochroleuca
Moraea pallida
Nassella trichotoma
Nees ex
One or
Onopordum acaulon
Onopordum illyricum
Opuntia aurantiaca
Orobanche bulbosa
Orobanche californica
Orobanche cooperi
Orobanche corymbosa
Orobanche dugesii
Orobanche fasciculata
Orobanche ludoviciana
Orobanche multicaulis
Orobanche parishii
Orobanche pinorum
Orobanche uniflora
Orobanche valida
Orobanche vallicola
Oryza longistaminata
Oryza punctata
Oryza rufipogon
Ottelia alismoides
Parasitic weeds
Paspalum scrobiculatum
Pennisetum clandestinum
Pennisetum macrourum
Pennisetum pedicellatum
Pennisetum polystachion
Prosopis alpataco
Prosopis argentina
Prosopis articulata
Prosopis burkartii
Prosopis caldenia
Prosopis calingastana
Prosopis campestris
Prosopis castellanosii
Prosopis denudans
Prosopis elata
Prosopis farcta
Prosopis ferox
Prosopis fiebrigii
Prosopis hassleri
Prosopis humilis
Prosopis kuntzei
Prosopis pallida
Prosopis palmeri
Prosopis reptans
Prosopis rojasiana
Prosopis ruizlealii
Prosopis ruscifolia
Prosopis sericantha
Prosopis strombulifera
Prosopis torquata
Rottboellia cochinchinensis
Rubus fruticosus
Rubus moluccanus
Saccharum spontaneum
Sagittaria sagittifolia
Salsola vermiculata
Salvinia auriculata
Salvinia biloba
Salvinia herzogii
Salvinia molesta
Senecio inaequidens
Senecio madagascariensis
Setaria pumila
Shuttleworth ex
Solanum tampicense
Solanum torvum
Solanum viarum
Sparganium erectum
Spermacoce alata
Terrestrial weeds
Tridax procumbens
Urochloa panicoides

Informational only, not legal advice. Lists change; always check the official source linked above before you buy, sell, plant or move a plant. Lists checked 2026-10-14.