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NRCS Invasive Species Policy
Invasive Species Executive Order 13112
Washington State-listed Noxious Weeds
156 records returned
Click on an accepted name below to view its PLANTS Profile with more information, and
web links if available. Noxious weeds that are synonyms retain their noxious status, and are indented beneath the current PLANTS accepted name.
Washington Administrative Code. 2005.
Noxious weed control, Chapter 16-752
(24 May 2006).
State of Washington.
Washington Administrative Code. 2005.
State noxious weed list and schedule of monetary penalties, Chapter 16-750
(24 May 2006).
State of Washington.
| Symbol |
Scientific Name |
Noxious Common Name |
State Noxious Status† |
Native Status* |
| ABTH |
Abutilon theophrasti Medik. |
velvetleaf |
CAW, NWSPQ |
L48 (I), CAN (I) |
| ALPE4 |
Alliaria petiolata (M. Bieb.) Cavara & Grande |
garlic mustard |
CAW, NWSPQ |
L48 (I), AK (I), CAN (I) |
| CAPY2 |
Carduus pycnocephalus L. |
Italian thistle |
CAW, NWSPQ |
L48 (I), HI (I) |
| CECA2 |
Centaurea calcitrapa L. |
purple starthistle |
CAW, NWSPQ |
L48 (I), CAN (I) |
| CEMA9 |
Centaurea macrocephala Puschk. ex Willd. |
bighead knapweed |
CAW, NWSPQ |
L48 (I), CAN (I) |
| CENI3 |
Centaurea nigrescens Willd. |
Vochin knapweed |
CAW, NWSPQ |
L48 (I), CAN (I) |
| GAOF |
Galega officinalis L. |
goatsrue |
CAW, NWSPQ |
L48 (I), CAN (I) |
| MINY |
Mirabilis nyctaginea (Michx.) MacMill. |
wild four o'clock, wild four o'clock, umbrella-wort |
CAW, NWSPQ |
L48 (N), CAN (N) |
| SAAE |
Salvia aethiopis L. |
Mediterranean sage |
CAW, NWSPQ |
L48 (I) |
| SAPR2 |
Salvia pratensis L. |
meadow clary |
CAW, NWSPQ |
L48 (I), CAN (I) |
| SOEL |
Solanum elaeagnifolium Cav. |
silverleaf nightshade |
CAW, NWSPQ |
L48 (N), HI (I), PR (N) |
| SORO |
Solanum rostratum Dunal |
buffalobur, buffaloburr |
CAW, NWSPQ |
L48 (N), CAN (W) |
| SPJU2 |
Spartium junceum L. |
Spanish broom |
CAW, NWSPQ |
L48 (I), HI (I) |
| HYVE3 |
Hydrilla verticillata (L. f.) Royle |
hydrilla |
CAW, WAWQ |
L48 (I) |
| SPDE2 |
Spartina densiflora Brongn. |
dense-flowered cordgrass, denseflower cordgrass |
CAW, WAWQ |
L48 (I) |
| SPPA |
Spartina patens (Aiton) Muhl. |
salt meadow cordgrass |
CAW, WAWQ |
L48 (N), PR (N), VI (N), CAN (N) |
| ACRE3 |
Acroptilon repens (L.) DC. |
Russian knapweed |
CBW |
L48 (I), CAN (I) |
| ALMA12 |
Alhagi maurorum Medik. |
camelthorn |
CBW |
L48 (I) |
| ALMY |
Alopecurus myosuroides Huds. |
blackgrass |
CBW |
L48 (I), CAN (N) |
| ANAR16 |
Anchusa arvensis (L.) M. Bieb. |
annual bugloss |
CBW |
L48 (I), CAN (I) |
| BRAL4 |
Bryonia alba L. |
white bryony |
CBW |
L48 (I) |
| CELO3 |
Cenchrus longispinus (Hack.) Fernald |
longspine sandbur |
CBW |
L48 (N), CAN (N) |
| CESO3 |
Centaurea solstitialis L. |
yellow starthistle |
CBW |
L48 (I), CAN (I) |
| CHJU |
Chondrilla juncea L. |
rush skeletonweed |
CBW |
L48 (I), CAN (I) |
| CYOF |
Cynoglossum officinale L. |
houndstongue |
CBW |
L48 (I), CAN (I) |
| GERO |
Geranium robertianum L. |
herb Robert |
CBW |
L48 (NI), AK (I), CAN (N), SPM (N) |
| HIAT2 |
Hieracium atratum Fr. |
polar hawkweed |
CBW |
|
| HIGL3 |
Hieracium glomeratum Froel. |
queen-devil hawkweed |
CBW |
L48 (I) |
| HILA4 |
Hieracium laevigatum Willd. |
smooth hawkweed |
CBW |
L48 (N) |
| HYRA3 |
Hypochaeris radicata L. |
common catsear |
CBW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| LEHO7 |
Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. |
lepyrodiclis |
CBW |
L48 (I) |
| LIDAD |
Linaria dalmatica (L.) Mill. ssp. dalmatica |
Dalmatian toadflax |
CBW |
L48 (I), CAN (I) |
| LIGED |
Linaria genistifolia (L.) Mill. ssp. dalmatica (L.) Maire & Petitm. |
Dalmatian toadflax |
NWSPQ |
|
| PIHI |
Picris hieracioides L. |
hawkweed oxtongue |
CBW |
L48 (NI), AK (N), HI (I), CAN (I) |
| PORE5 |
Potentilla recta L. |
sulfur cinquefoil |
CBW |
L48 (I), CAN (I) |
| ROAU |
Rorippa austriaca (Crantz) Besser |
Austrian fieldcress |
CBW |
L48 (I), CAN (I) |
| SOARA2 |
Sonchus arvensis L. ssp. arvensis |
perennial sowthistle |
CBW |
L48 (I), CAN (I), SPM (I) |
| SPSA3 |
Sphaerophysa salsula (Pall.) DC. |
swainsonpea |
CBW |
L48 (I), CAN (I) |
| TRTE |
Tribulus terrestris L. |
puncturevine |
CBW |
L48 (I), HI (I), CAN (W) |
| ANOF |
Anchusa officinalis L. |
common bugloss, common bugloss, alkanet, anchusa |
CBW, NWSPQ |
L48 (I), CAN (I) |
| CANU4 |
Carduus nutans L. |
musk thistle, musk thistle, nodding thistle |
CBW, NWSPQ |
L48 (I), CAN (I) |
| CEJA |
Centaurea jacea L. |
brown knapweed, brown knapweed, rayed knapweed, brown centaury, horse-knobs, hardheads |
CBW, NWSPQ |
L48 (I), CAN (I), GL (I) |
| CYSC4 |
Cytisus scoparius (L.) Link |
Scotch broom |
CBW, NWSPQ |
L48 (I), AK (I), HI (I), CAN (I) |
| ECVU |
Echium vulgare L. |
blueweed, blueweed, blue thistle, blue devil, viper's bugloss, snake flower |
CBW, NWSPQ |
L48 (I), AK (I), CAN (W), SPM (I) |
| EUES |
Euphorbia esula L. |
leafy spurge |
CBW, NWSPQ |
L48 (I), CAN (I) |
| HIAU |
Hieracium aurantiacum L. |
orange hawkweed, orange hawkweed, orange paintbrush, red daisy flameweed, devil's weed, grim-the-collier |
CBW, NWSPQ |
L48 (I), AK (I), CAN (I), SPM (I) |
| HIPI |
Hieracium pilosella L. |
mouseear hawkweed |
CBW, NWSPQ |
L48 (I), AK (I), CAN (I), SPM (I) |
| IMGL |
Impatiens glandulifera Royle |
policeman's helmet |
CBW, NWSPQ |
L48 (I), CAN (I) |
| LELA2 |
Lepidium latifolium L. |
perennial pepperweed |
CBW, NWSPQ |
L48 (I), CAN (I) |
| ONAC |
Onopordum acanthium L. |
Scotch thistle |
CBW, NWSPQ |
L48 (I), CAN (W) |
| POBO10 |
Polygonum ×bohemicum (J. Chrtek & Chrtkovß) Zika & Jacobson [cuspidatum × sachalinense] |
Bohemian knotweed |
CBW, NWSPQ |
CAN (I) |
| POPO5 |
Polygonum polystachyum Wall. ex Meisn. |
Himalayan knotweed |
CBW, NWSPQ |
L48 (I), CAN (I), SPM (I) |
| POSA4 |
Polygonum sachalinense F. Schmidt ex Maxim. |
giant knotweed |
CBW, NWSPQ |
L48 (I), AK (I), CAN (I) |
| TARA |
Tamarix ramosissima Ledeb. |
saltcedar |
CBW, NWSPQ |
L48 (I) |
| TOAR |
Torilis arvensis (Huds.) Link |
hedgeparsley |
CBW, NWSPQ |
L48 (I), CAN (N) |
| ULEU |
Ulex europaeus L. |
gorse, gorse, furze |
CBW, NWSPQ |
L48 (I), HI (I), CAN (I) |
| CYES |
Cyperus esculentus L. |
yellow nutsedge |
CBW, Q |
L48 (NI), HI (I), PR (I), VI (I), CAN (I) |
| LYVI3 |
Lythrum virgatum L.1 |
purple loosestrife, wand loosestrife |
CBW, Q |
L48 (I) |
| CACA |
Cabomba caroliniana A. Gray |
fanwort |
CBW, WAWQ |
L48 (N), CAN (N) |
| EGDE |
Egeria densa Planch. |
Brazilian elodea |
CBW, WAWQ |
L48 (I), HI (I), PR (I), CAN (W) |
| MYSP2 |
Myriophyllum spicatum L. |
Eurasian watermilfoil |
CBW, WAWQ |
L48 (I), AK (I), CAN (I) |
| NYPE |
Nymphoides peltata (S.G. Gmel.) Kuntze |
yellow floating heart |
CBW, WAWQ |
L48 (I), CAN (I) |
| SAGR |
Sagittaria graminea Michx. |
grass-leaved arrowhead |
CBW, WAWQ |
L48 (N), CAN (N) |
| SPAL |
Spartina alterniflora Loisel. |
smooth cordgrass |
CBW, WAWQ |
L48 (N), CAN (N) |
| AECY |
Aegilops cylindrica Host |
jointed goatgrass |
CCW |
L48 (I) |
| ARAB3 |
Artemisia absinthium L. |
absinth wormwood |
CCW |
L48 (I), CAN (I) |
| BUDA2 |
Buddleja davidii Franch. |
butterfly bush |
CCW |
L48 (I), HI (I), PR (I), CAN (I) |
| CADR |
Cardaria draba (L.) Desv. |
hoary cress |
CCW |
L48 (I), CAN (I) |
| CAPU6 |
Cardaria pubescens (C.A. Mey.) Jarmolenko |
hairy whitetop |
CCW |
L48 (I), CAN (I) |
| CEPUP6 |
Centromadia pungens (Hook. & Arn.) Greene ssp. pungens |
|
|
L48 (N) |
| HEPU5 |
Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray |
spikeweed |
CCW |
|
| CIAR4 |
Cirsium arvense (L.) Scop. |
Canada thistle |
CCW |
L48 (I), AK (I), CAN (I), GL (I), SPM (I) |
| CIVU |
Cirsium vulgare (Savi) Ten. |
bull thistle |
CCW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| CLVI6 |
Clematis vitalba L. |
old man's beard |
CCW |
L48 (I), CAN (I) |
| COMA2 |
Conium maculatum L. |
poison hemlock |
CCW |
L48 (I), CAN (I) |
| COAR4 |
Convolvulus arvensis L. |
field bindweed |
CCW |
L48 (I), HI (I), CAN (I) |
| CUAP2 |
Cuscuta approximata Bab. |
smoothseed alfalfa dodder |
CCW |
L48 (I), CAN (I) |
| GYPA |
Gypsophila paniculata L. |
babysbreath |
CCW |
L48 (I), CAN (I) |
| HEHE |
Hedera helix L.2 |
English ivy |
CCW |
L48 (I), HI (I), CAN (I) |
| HEHI12 |
Hedera hibernica (G. Kirchn.) Bean3 |
English ivy |
CCW |
L48 (I) |
| HIERA |
Hieracium L.4 |
hawkweed |
CCW |
|
| HYNI |
Hyoscyamus niger L. |
black henbane |
CCW |
L48 (I), CAN (I) |
| HYPE |
Hypericum perforatum L. |
common St. Johnswort |
CCW |
L48 (I), HI (I), CAN (I), SPM (I) |
| IRPS |
Iris pseudacorus L. |
iris, yellow flag iris |
CCW |
L48 (I), CAN (I) |
| LIVU2 |
Linaria vulgaris Mill. |
yellow toadflax |
CCW |
L48 (I), AK (I), CAN (I), GL (I), SPM (I) |
| NYOD |
Nymphaea odorata Aiton |
fragrant water lily |
CCW |
L48 (N), AK (I), PR (N), CAN (N) |
| PHAR3 |
Phalaris arundinacea L. |
reed canarygrass |
CCW |
L48 (N), AK (I), CAN (N), SPM (I) |
| PHAU7 |
Phragmites australis (Cav.) Trin. ex Steud.5 |
common reed |
CCW |
L48 (N), HI (I), PR (N), CAN (N) |
| POCR3 |
Potamogeton crispus L. |
crisped pondweed, curly pondweed |
CCW |
L48 (I), CAN (I) |
| SECE |
Secale cereale L. |
cereal rye |
CCW |
L48 (I), AK (I), CAN (W), GL (W) |
| SEVU |
Senecio vulgaris L. |
common groundsel |
CCW |
L48 (I), AK (I), HI (I), CAN (I), GL (I), SPM (I) |
| SILAA3 |
Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet |
white cockle |
CCW |
L48 (I), AK (I) |
| TAVU |
Tanacetum vulgare L. |
common tansy |
CCW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| TRPE21 |
Tripleurospermum perforatum (Mérat) M. Lainz |
|
|
L48 (I), AK (I), CAN (I), GL (I) |
| MAPE2 |
Matricaria perforata Mérat |
scentless mayweed |
CCW |
|
| XASP2 |
Xanthium spinosum L. |
spiny cocklebur |
CCW |
L48 (I), CAN (I) |
| BASC5 |
Bassia scoparia (L.) A.J. Scott |
|
|
L48 (I), CAN (I) |
| KOSC |
Kochia scoparia (L.) Schrad. |
kochia, summer-cyprus, burning-bush, fireball, Mexican fireweed |
NWSPQ |
|
| CESTM |
Centaurea stoebe L. ssp. micranthos (Gugler) Hayek |
|
|
L48 (I), HI (I), CAN (I) |
| CEBI2 |
Centaurea biebersteinii DC. |
spotted knapweed |
NWSPQ |
|
| CHMI |
Chaenorhinum minus (L.) Lange |
dwarf snapdragon |
NWSPQ |
L48 (I), CAN (I) |
| HITR |
Hibiscus trionum L. |
Venice mallow, flower-of-an-hour, bladder ketmia, modesty, shoo-fly |
NWSPQ |
L48 (I), CAN (I) |
| PRLO |
Proboscidea louisianica (Mill.) Thell. |
unicorn-plant |
NWSPQ |
L48 (N), CAN (I) |
| CATE2 |
Carduus tenuiflorus W. Curtis |
slenderflower thistle |
NWSPQ, CAW |
L48 (I) |
| CRVU2 |
Crupina vulgaris Cass. |
common crupina |
NWSPQ, CAW |
L48 (I) |
| EUOB4 |
Euphorbia oblongata Griseb. |
eggleaf spurge |
NWSPQ, CAW |
L48 (I) |
| HECI |
Helianthus ciliaris DC. |
Texas blueweed |
NWSPQ, CAW |
L48 (N) |
| HEMA17 |
Heracleum mantegazzianum Sommier & Levier |
giant hogweed, giant hogweed, giant cow parsnip |
NWSPQ, CAW |
L48 (I), CAN (I) |
| HIFL3 |
Hieracium ×floribundum Wimm. & Grab. (pro sp.) [caespitosum × lactucella] |
yellow devil hawkweed |
NWSPQ, CAW |
L48 (I), CAN (I), SPM (I) |
| ISTI |
Isatis tinctoria L. |
dyers woad, dyers' woad |
NWSPQ, CAW |
L48 (I), CAN (W) |
| PUMOL |
Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S. Almeida |
kudzu |
NWSPQ, CAW |
L48 (I), HI (I) |
| SASC2 |
Salvia sclarea L. |
clary sage |
NWSPQ, CAW |
L48 (I), CAN (W) |
| SIMA3 |
Silybum marianum (L.) Gaertn. |
milk thistle |
NWSPQ, CAW |
L48 (I), CAN (I) |
| SOSE2 |
Soliva sessilis Ruiz & Pav. |
lawnweed |
NWSPQ, CAW |
L48 (I), HI (I), CAN (I) |
| SOHA |
Sorghum halepense (L.) Pers. |
johnsongrass |
NWSPQ, CAW |
L48 (I), HI (I), PR (I), CAN (I) |
| THPA7 |
Thymelaea passerina (L.) Coss. & Germ. |
spurge flax |
NWSPQ, CAW |
L48 (I), CAN (N) |
| ZYFA |
Zygophyllum fabago L. |
Syrian bean-caper, Syrian beancaper |
NWSPQ, CAW |
L48 (I) |
| AMFR |
Amorpha fruticosa L. |
indigobush, indigobush, lead plant |
NWSPQ, CBW |
L48 (N), CAN (N) |
| ANSY |
Anthriscus sylvestris (L.) Hoffm. |
wild chervil |
NWSPQ, CBW |
L48 (I), CAN (I), GL (I) |
| CAAC |
Carduus acanthoides L. |
plumeless thistle |
NWSPQ, CBW |
L48 (I), CAN (I) |
| CEDI3 |
Centaurea diffusa Lam. |
diffuse knapweed |
NWSPQ, CBW |
L48 (I), CAN (I) |
| CENI2 |
Centaurea nigra L. |
black knapweed |
NWSPQ, CBW |
L48 (I), CAN (I), SPM (I) |
| DACA6 |
Daucus carota L. |
wild carrot, wild carrot, Queen Anne's lace |
NWSPQ, CBW |
L48 (I), PR (I), CAN (I), SPM (I) |
| HICA10 |
Hieracium caespitosum Dumort. |
yellow hawkweed, yellow hawkweed, yellow paintbrush, devil's paintbrush, yellow devil, field hawkweed, king devil |
NWSPQ, CBW |
L48 (I), CAN (I) |
| LEVU |
Leucanthemum vulgare Lam. |
ox-eye daisy, oxeye daisy, white daisy, whiteweed, field daisy, marguerite, poorland flower |
NWSPQ, CBW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| POCU6 |
Polygonum cuspidatum Siebold & Zucc. |
Japanese knotweed |
NWSPQ, CBW |
L48 (I), AK (I), CAN (I), SPM (I) |
| SEJA |
Senecio jacobaea L.6 |
tansy ragwort |
NWSPQ, CBW, Q |
L48 (I), CAN (I), SPM (I) |
| CYRO |
Cyperus rotundus L. |
purple nutsedge |
Q |
L48 (I), HI (I), PR (I), VI (I) |
| LYSA2 |
Lythrum salicaria L.1 |
purple loosestrife |
Q, CBW |
L48 (I), CAN (I), SPM (I) |
| BUUM |
Butomus umbellatus L. |
flowering rush |
WAWQ |
L48 (I), CAN (I) |
| CRHE5 |
Crassula helmsii A. Berger |
Australian swamp stonecrop |
WAWQ |
|
| EPHI |
Epilobium hirsutum L. |
hairy willow herb |
WAWQ |
L48 (I), CAN (I) |
| GLCL3 |
Glossostigma cleistanthum W.R. Barker |
mud mat |
WAWQ |
L48 (I) |
| GLDI |
Glossostigma diandrum (L.) Kunze [excluded] |
mud mat |
WAWQ |
|
| HYMO6 |
Hydrocharis morsus-ranae L. |
European frog-bit |
WAWQ |
L48 (I), CAN (I) |
| LAMA15 |
Lagarosiphon major (Ridley) Moss |
African elodea |
WAWQ |
|
| LUGRH |
Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. hexapetala (Hook. & Arn.) G.L. Nesom & Kartesz |
|
|
L48 (I) |
| LUHE5 |
Ludwigia hexapetala (Hook. & Arn.) Zardini, Gu & P.H. Raven |
water primrose |
WAWQ |
|
| MUKE |
Murdannia keisak (Hassk.) Hand.-Maz. |
marsh dew flower, Asian spiderwort |
WAWQ |
L48 (I) |
| NAMI |
Najas minor All. |
slender-leaved naiad, brittle naiad |
WAWQ |
L48 (I), CAN (I) |
| TRBI5 |
Trapa bicornis Osbeck |
water caltrap, devil's pod, bat nut |
WAWQ |
|
| TRNA |
Trapa natans L. |
water chestnut, bull nut |
WAWQ |
L48 (I), CAN (I) |
| UTIN |
Utricularia inflata Walter |
swollen bladderwort |
WAWQ |
L48 (N) |
| LYVU |
Lysimachia vulgaris L. |
garden loosestrife |
WAWQ, CBW |
L48 (I), CAN (I) |
| MYAQ2 |
Myriophyllum aquaticum (Vell.) Verdc. |
parrotfeather |
WAWQ, CBW |
L48 (I), HI (I), CAN (I) |
| SPAN5 |
Spartina anglica C.E. Hubbard |
common cordgrass |
WAWQ, CBW |
L48 (I), CAN (I) |
| †Code | Noxious Status |
|---|
| CAW |
Class A noxious weed |
| CBW |
Class B noxious weed |
| CCW |
Class C noxious weed |
| NWSPQ |
Noxious weed seed and plant quarantine |
| Q |
Quarantine |
| WAWQ |
Wetland and aquatic weed quarantine |
| *Code | Native Status |
|---|
| I |
Introduced |
| N |
Native |
| NI |
Native and Introduced |
| W |
Waif |
| *Code | Native Status Jursdiction |
|---|
| L48 |
Lower 48 States |
| AK |
Alaska |
| HI |
Hawaii |
| PR |
Puerto Rico |
| VI |
Virgin Islands |
| CAN |
Canada |
| GL |
Greenland |
| SPM |
St. Pierre and Miquelon |
1 any hybrid cross
2 only cultivars 'Baltica', 'Pittsburgh', 'Star'
3 only cultivar 'Hibernica'
4 non-native Hieracium species except those listed as Class A or Class B
5 non-native genotypes
6 in hay
Additional information about noxious plants in this state can be found at:
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