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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) |
| ACRE3 |
Acroptilon repens (L.) DC. |
Russian knapweed |
CBW |
L48 (I), CAN (I) |
| AECY |
Aegilops cylindrica Host |
jointed goatgrass |
CCW |
L48 (I) |
| ALMA12 |
Alhagi maurorum Medik. |
camelthorn |
CBW |
L48 (I) |
| ALMY |
Alopecurus myosuroides Huds. |
blackgrass |
CBW |
L48 (I), CAN (N) |
| ALPE4 |
Alliaria petiolata (M. Bieb.) Cavara & Grande |
garlic mustard |
CAW, NWSPQ |
L48 (I), AK (I), CAN (I) |
| AMFR |
Amorpha fruticosa L. |
indigobush, indigobush, lead plant |
NWSPQ, CBW |
L48 (N), CAN (N) |
| ANAR16 |
Anchusa arvensis (L.) M. Bieb. |
annual bugloss |
CBW |
L48 (I), CAN (I) |
| ANOF |
Anchusa officinalis L. |
common bugloss, common bugloss, alkanet, anchusa |
CBW, NWSPQ |
L48 (I), CAN (I) |
| ANSY |
Anthriscus sylvestris (L.) Hoffm. |
wild chervil |
NWSPQ, CBW |
L48 (I), CAN (I), GL (I) |
| ARAB3 |
Artemisia absinthium L. |
absinth wormwood |
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 |
|
| BRAL4 |
Bryonia alba L. |
white bryony |
CBW |
L48 (I) |
| BUDA2 |
Buddleja davidii Franch. |
butterfly bush |
CCW |
L48 (I), HI (I), PR (I), CAN (I) |
| BUUM |
Butomus umbellatus L. |
flowering rush |
WAWQ |
L48 (I), CAN (I) |
| CAAC |
Carduus acanthoides L. |
plumeless thistle |
NWSPQ, CBW |
L48 (I), CAN (I) |
| CACA |
Cabomba caroliniana A. Gray |
fanwort |
CBW, WAWQ |
L48 (N), CAN (N) |
| CADR |
Cardaria draba (L.) Desv. |
hoary cress |
CCW |
L48 (I), CAN (I) |
| CANU4 |
Carduus nutans L. |
musk thistle, musk thistle, nodding thistle |
CBW, NWSPQ |
L48 (I), CAN (I) |
| CAPU6 |
Cardaria pubescens (C.A. Mey.) Jarmolenko |
hairy whitetop |
CCW |
L48 (I), CAN (I) |
| CAPY2 |
Carduus pycnocephalus L. |
Italian thistle |
CAW, NWSPQ |
L48 (I), HI (I) |
| CATE2 |
Carduus tenuiflorus W. Curtis |
slenderflower thistle |
NWSPQ, CAW |
L48 (I) |
| CECA2 |
Centaurea calcitrapa L. |
purple starthistle |
CAW, NWSPQ |
L48 (I), CAN (I) |
| CEDI3 |
Centaurea diffusa Lam. |
diffuse knapweed |
NWSPQ, CBW |
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) |
| CELO3 |
Cenchrus longispinus (Hack.) Fernald |
longspine sandbur |
CBW |
L48 (N), CAN (N) |
| CEMA9 |
Centaurea macrocephala Puschk. ex Willd. |
bighead knapweed |
CAW, NWSPQ |
L48 (I), CAN (I) |
| CENI2 |
Centaurea nigra L. |
black knapweed |
NWSPQ, CBW |
L48 (I), CAN (I), SPM (I) |
| CENI3 |
Centaurea nigrescens Willd. |
Vochin knapweed |
CAW, NWSPQ |
L48 (I), CAN (I) |
| CEPUP6 |
Centromadia pungens (Hook. & Arn.) Greene ssp. pungens |
|
|
L48 (N) |
| HEPU5 |
Hemizonia pungens (Hook. & Arn.) Torr. & A. Gray |
spikeweed |
CCW |
|
| CESO3 |
Centaurea solstitialis L. |
yellow starthistle |
CBW |
L48 (I), CAN (I) |
| CESTM |
Centaurea stoebe L. ssp. micranthos (Gugler) Hayek |
|
|
L48 (I), HI (I), CAN (I) |
| CEBI2 |
Centaurea biebersteinii DC. |
spotted knapweed |
NWSPQ |
|
| CHJU |
Chondrilla juncea L. |
rush skeletonweed |
CBW |
L48 (I), CAN (I) |
| CHMI |
Chaenorhinum minus (L.) Lange |
dwarf snapdragon |
NWSPQ |
L48 (I), CAN (I) |
| 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) |
| COAR4 |
Convolvulus arvensis L. |
field bindweed |
CCW |
L48 (I), HI (I), CAN (I) |
| COMA2 |
Conium maculatum L. |
poison hemlock |
CCW |
L48 (I), CAN (I) |
| CRHE5 |
Crassula helmsii A. Berger |
Australian swamp stonecrop |
WAWQ |
|
| CRVU2 |
Crupina vulgaris Cass. |
common crupina |
NWSPQ, CAW |
L48 (I) |
| CUAP2 |
Cuscuta approximata Bab. |
smoothseed alfalfa dodder |
CCW |
L48 (I), CAN (I) |
| CYES |
Cyperus esculentus L. |
yellow nutsedge |
CBW, Q |
L48 (NI), HI (I), PR (I), VI (I), CAN (I) |
| CYOF |
Cynoglossum officinale L. |
houndstongue |
CBW |
L48 (I), CAN (I) |
| CYRO |
Cyperus rotundus L. |
purple nutsedge |
Q |
L48 (I), HI (I), PR (I), VI (I) |
| CYSC4 |
Cytisus scoparius (L.) Link |
Scotch broom |
CBW, NWSPQ |
L48 (I), AK (I), HI (I), CAN (I) |
| DACA6 |
Daucus carota L. |
wild carrot, wild carrot, Queen Anne's lace |
NWSPQ, CBW |
L48 (I), PR (I), CAN (I), SPM (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) |
| EGDE |
Egeria densa Planch. |
Brazilian elodea |
CBW, WAWQ |
L48 (I), HI (I), PR (I), CAN (W) |
| EPHI |
Epilobium hirsutum L. |
hairy willow herb |
WAWQ |
L48 (I), CAN (I) |
| EUES |
Euphorbia esula L. |
leafy spurge |
CBW, NWSPQ |
L48 (I), CAN (I) |
| EUOB4 |
Euphorbia oblongata Griseb. |
eggleaf spurge |
NWSPQ, CAW |
L48 (I) |
| GAOF |
Galega officinalis L. |
goatsrue |
CAW, NWSPQ |
L48 (I), CAN (I) |
| GERO |
Geranium robertianum L. |
herb Robert |
CBW |
L48 (NI), AK (I), CAN (N), SPM (N) |
| GLCL3 |
Glossostigma cleistanthum W.R. Barker |
mud mat |
WAWQ |
L48 (I) |
| GLDI |
Glossostigma diandrum (L.) Kunze [excluded] |
mud mat |
WAWQ |
|
| GYPA |
Gypsophila paniculata L. |
babysbreath |
CCW |
L48 (I), CAN (I) |
| HECI |
Helianthus ciliaris DC. |
Texas blueweed |
NWSPQ, CAW |
L48 (N) |
| HEHE |
Hedera helix L.1 |
English ivy |
CCW |
L48 (I), HI (I), CAN (I) |
| HEHI12 |
Hedera hibernica (G. Kirchn.) Bean2 |
English ivy |
CCW |
L48 (I) |
| HEMA17 |
Heracleum mantegazzianum Sommier & Levier |
giant hogweed, giant hogweed, giant cow parsnip |
NWSPQ, CAW |
L48 (I), CAN (I) |
| HIAT2 |
Hieracium atratum Fr. |
polar hawkweed |
CBW |
|
| 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) |
| 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) |
| HIERA |
Hieracium L.3 |
hawkweed |
CCW |
|
| HIFL3 |
Hieracium ×floribundum Wimm. & Grab. (pro sp.) [caespitosum × lactucella] |
yellow devil hawkweed |
NWSPQ, CAW |
L48 (I), CAN (I), SPM (I) |
| HIGL3 |
Hieracium glomeratum Froel. |
queen-devil hawkweed |
CBW |
L48 (I) |
| HILA4 |
Hieracium laevigatum Willd. |
smooth hawkweed |
CBW |
L48 (N) |
| HIPI |
Hieracium pilosella L. |
mouseear hawkweed |
CBW, NWSPQ |
L48 (I), AK (I), CAN (I), SPM (I) |
| HITR |
Hibiscus trionum L. |
Venice mallow, flower-of-an-hour, bladder ketmia, modesty, shoo-fly |
NWSPQ |
L48 (I), CAN (I) |
| HYMO6 |
Hydrocharis morsus-ranae L. |
European frog-bit |
WAWQ |
L48 (I), CAN (I) |
| 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) |
| HYRA3 |
Hypochaeris radicata L. |
common catsear |
CBW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| HYVE3 |
Hydrilla verticillata (L. f.) Royle |
hydrilla |
CAW, WAWQ |
L48 (I) |
| IMGL |
Impatiens glandulifera Royle |
policeman's helmet |
CBW, NWSPQ |
L48 (I), CAN (I) |
| IRPS |
Iris pseudacorus L. |
iris, yellow flag iris |
CCW |
L48 (I), CAN (I) |
| ISTI |
Isatis tinctoria L. |
dyers woad, dyers' woad |
NWSPQ, CAW |
L48 (I), CAN (W) |
| LAMA15 |
Lagarosiphon major (Ridley) Moss |
African elodea |
WAWQ |
|
| LEHO7 |
Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. |
lepyrodiclis |
CBW |
L48 (I) |
| LELA2 |
Lepidium latifolium L. |
perennial pepperweed |
CBW, NWSPQ |
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) |
| 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 |
|
| LIVU2 |
Linaria vulgaris Mill. |
yellow toadflax |
CCW |
L48 (I), AK (I), CAN (I), GL (I), SPM (I) |
| 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 |
|
| LYSA2 |
Lythrum salicaria L.4 |
purple loosestrife |
Q, CBW |
L48 (I), CAN (I), SPM (I) |
| LYVI3 |
Lythrum virgatum L.4 |
purple loosestrife, wand loosestrife |
CBW, Q |
L48 (I) |
| LYVU |
Lysimachia vulgaris L. |
garden loosestrife |
WAWQ, CBW |
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) |
| MUKE |
Murdannia keisak (Hassk.) Hand.-Maz. |
marsh dew flower, Asian spiderwort |
WAWQ |
L48 (I) |
| MYAQ2 |
Myriophyllum aquaticum (Vell.) Verdc. |
parrotfeather |
WAWQ, CBW |
L48 (I), HI (I), CAN (I) |
| MYSP2 |
Myriophyllum spicatum L. |
Eurasian watermilfoil |
CBW, WAWQ |
L48 (I), AK (I), CAN (I) |
| NAMI |
Najas minor All. |
slender-leaved naiad, brittle naiad |
WAWQ |
L48 (I), CAN (I) |
| NYOD |
Nymphaea odorata Aiton |
fragrant water lily |
CCW |
L48 (N), AK (I), PR (N), CAN (N) |
| NYPE |
Nymphoides peltata (S.G. Gmel.) Kuntze |
yellow floating heart |
CBW, WAWQ |
L48 (I), CAN (I) |
| ONAC |
Onopordum acanthium L. |
Scotch thistle |
CBW, NWSPQ |
L48 (I), CAN (W) |
| 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) |
| PIHI |
Picris hieracioides L. |
hawkweed oxtongue |
CBW |
L48 (NI), AK (N), HI (I), CAN (I) |
| POBO10 |
Polygonum ×bohemicum (J. Chrtek & Chrtkovß) Zika & Jacobson [cuspidatum × sachalinense] |
Bohemian knotweed |
CBW, NWSPQ |
CAN (I) |
| POCR3 |
Potamogeton crispus L. |
crisped pondweed, curly pondweed |
CCW |
L48 (I), CAN (I) |
| POCU6 |
Polygonum cuspidatum Siebold & Zucc. |
Japanese knotweed |
NWSPQ, CBW |
L48 (I), AK (I), CAN (I), SPM (I) |
| POPO5 |
Polygonum polystachyum Wall. ex Meisn. |
Himalayan knotweed |
CBW, NWSPQ |
L48 (I), CAN (I), SPM (I) |
| PORE5 |
Potentilla recta L. |
sulfur cinquefoil |
CBW |
L48 (I), CAN (I) |
| POSA4 |
Polygonum sachalinense F. Schmidt ex Maxim. |
giant knotweed |
CBW, NWSPQ |
L48 (I), AK (I), CAN (I) |
| PRLO |
Proboscidea louisianica (Mill.) Thell. |
unicorn-plant |
NWSPQ |
L48 (N), CAN (I) |
| PUMOL |
Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S. Almeida |
kudzu |
NWSPQ, CAW |
L48 (I), HI (I) |
| ROAU |
Rorippa austriaca (Crantz) Besser |
Austrian fieldcress |
CBW |
L48 (I), CAN (I) |
| SAAE |
Salvia aethiopis L. |
Mediterranean sage |
CAW, NWSPQ |
L48 (I) |
| SAGR |
Sagittaria graminea Michx. |
grass-leaved arrowhead |
CBW, WAWQ |
L48 (N), CAN (N) |
| SAPR2 |
Salvia pratensis L. |
meadow clary |
CAW, NWSPQ |
L48 (I), CAN (I) |
| SASC2 |
Salvia sclarea L. |
clary sage |
NWSPQ, CAW |
L48 (I), CAN (W) |
| SECE |
Secale cereale L. |
cereal rye |
CCW |
L48 (I), AK (I), CAN (W), GL (W) |
| SEJA |
Senecio jacobaea L.6 |
tansy ragwort |
NWSPQ, CBW, Q |
L48 (I), CAN (I), SPM (I) |
| 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) |
| SIMA3 |
Silybum marianum (L.) Gaertn. |
milk thistle |
NWSPQ, CAW |
L48 (I), CAN (I) |
| SOARA2 |
Sonchus arvensis L. ssp. arvensis |
perennial sowthistle |
CBW |
L48 (I), CAN (I), SPM (I) |
| SOEL |
Solanum elaeagnifolium Cav. |
silverleaf nightshade |
CAW, NWSPQ |
L48 (N), HI (I), PR (N) |
| SOHA |
Sorghum halepense (L.) Pers. |
johnsongrass |
NWSPQ, CAW |
L48 (I), HI (I), PR (I), CAN (I) |
| SORO |
Solanum rostratum Dunal |
buffalobur, buffaloburr |
CAW, NWSPQ |
L48 (N), CAN (W) |
| SOSE2 |
Soliva sessilis Ruiz & Pav. |
lawnweed |
NWSPQ, CAW |
L48 (I), HI (I), CAN (I) |
| SPAL |
Spartina alterniflora Loisel. |
smooth cordgrass |
CBW, WAWQ |
L48 (N), CAN (N) |
| SPAN5 |
Spartina anglica C.E. Hubbard |
common cordgrass |
WAWQ, CBW |
L48 (I), CAN (I) |
| SPDE2 |
Spartina densiflora Brongn. |
dense-flowered cordgrass, denseflower cordgrass |
CAW, WAWQ |
L48 (I) |
| SPJU2 |
Spartium junceum L. |
Spanish broom |
CAW, NWSPQ |
L48 (I), HI (I) |
| SPPA |
Spartina patens (Aiton) Muhl. |
salt meadow cordgrass |
CAW, WAWQ |
L48 (N), PR (N), VI (N), CAN (N) |
| SPSA3 |
Sphaerophysa salsula (Pall.) DC. |
swainsonpea |
CBW |
L48 (I), CAN (I) |
| TARA |
Tamarix ramosissima Ledeb. |
saltcedar |
CBW, NWSPQ |
L48 (I) |
| TAVU |
Tanacetum vulgare L. |
common tansy |
CCW |
L48 (I), AK (I), HI (I), CAN (I), SPM (I) |
| THPA7 |
Thymelaea passerina (L.) Coss. & Germ. |
spurge flax |
NWSPQ, CAW |
L48 (I), CAN (N) |
| TOAR |
Torilis arvensis (Huds.) Link |
hedgeparsley |
CBW, NWSPQ |
L48 (I), CAN (N) |
| 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) |
| TRPE21 |
Tripleurospermum perforatum (Mérat) M. Lainz |
|
|
L48 (I), AK (I), CAN (I), GL (I) |
| MAPE2 |
Matricaria perforata Mérat |
scentless mayweed |
CCW |
|
| TRTE |
Tribulus terrestris L. |
puncturevine |
CBW |
L48 (I), HI (I), CAN (W) |
| ULEU |
Ulex europaeus L. |
gorse, gorse, furze |
CBW, NWSPQ |
L48 (I), HI (I), CAN (I) |
| UTIN |
Utricularia inflata Walter |
swollen bladderwort |
WAWQ |
L48 (N) |
| XASP2 |
Xanthium spinosum L. |
spiny cocklebur |
CCW |
L48 (I), CAN (I) |
| ZYFA |
Zygophyllum fabago L. |
Syrian bean-caper, Syrian beancaper |
NWSPQ, CAW |
L48 (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 only cultivars 'Baltica', 'Pittsburgh', 'Star'
2 only cultivar 'Hibernica'
3 non-native Hieracium species except those listed as Class A or Class B
4 any hybrid cross
5 non-native genotypes
6 in hay
Additional information about noxious plants in this state can be found at:
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