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