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Washington State Noxious Weed General Distribution Maps
For more information, e-mail us or call (360) 902-2070.
Data for these general distribution maps was provided by county
noxious weed control boards, Washington State University Cooperative
Extension, state and federal agencies, tribes, and non-governmental
organizations. No warranty is made by WSDA as to the accuracy,
reliability, or completeness of this data for individual or
aggregate use with other data.
To view PDF files, download Acrobat Reader.
Click on the common name below to view distribution map of weed.
.
| Common Name | Scientific Name | Class |
| absinth wormwood [PDF 95 KB] | Artemisia absinthium | C |
| Austrian fieldcress [PDF 92 KB] | Rorippa austriaca | B |
| babysbreath [PDF 92 KB] | Gypsophila paniculata | C |
| black henbane [PDF 92 KB] | Hyocyamus niger | C |
| blackgrass [PDF 93 KB] | Alopecurus myosuroides | B |
| blueweed [PDF 94 KB] | Echium vulgare | B |
| Brazilian elodea [PDF 103 KB] | Egeria densa | B |
| buffalobur [PDF 123 KB] | Solanum rostratum | A |
| bugloss, annual [PDF 92 KB] | Anchusa arvensis | B |
| bugloss, common [PDF 98 KB] | Anchusa officinalis | B |
| butterfly bush [PDF 119 KB] | Buddleja davidii | B |
| camelthorn [PDF 99 KB] | Alhagi maurorum | B |
| cereal rye [PDF 101 KB] | Secale cereale | C |
| common catsear [PDF 100 KB] | Hypochaeris radicata | B |
| common crupina [PDF 92 KB] | Crupina vulgaris | A |
| common fennel [PDF 105 KB] | Foeniculum vulgare | B |
| common groundsel [PDF 132 KB] | Senecio vulgaris | C |
| common reed (nonnative genotypes) [PDF 94 KB] | Phragmites australis | B |
| common St. Johnswort [PDF 91 KB] | Hypericum perforatum | C |
| common tansy [PDF 92 KB] | Tanacetum vulgare | C |
| cordgrass, common [PDF 98 KB] | Spartina anglica | A |
| cordgrass, dense flower [PDF 93 KB] | Spartina densiflora | A |
| cordgrass, salt meadow [PDF 93 KB] | Spartina patens | A |
| cordgrass, smooth [PDF 93 KB] | Spartina alterniflora | A |
| curly-leaf pondweed [PDF 93 KB] | Potamogeton crispus | C |
| Dalmatian toadflax [PDF ] | Linaria dalmatica ssp. dalmatica | B |
| dyers woad [PDF 97 KB] | Isatis tinctoria | A |
| eggleaf spurge [PDF 96 KB] | Euphorbia oblongata | A |
| English ivy - four cultivars only [PDF 107 KB] | Hedera helix 'Baltica', 'Pittsburgh', and 'Star'; H. hibernica 'Hibernica' | C |
| Eurasian watermilfoil [PDF 119 KB] | Myriophyllum spicatum | B |
| evergreen blackberry [PDF 94 KB] | Rubus laciniatus | C |
| false brome [PDF 93 KB] | Brachypodium sylvaticum | A |
| fanwort [PDF 96 KB] | Cabomba caroliniana | B |
| field bindweed [PDF 96 KB] | Convolvulus arvensis | C |
| floating primrose-willow [PDF 93 KB] | Ludwigia peploides | A |
| flowering rush [PDF 92 KB] | Butomus umbellatus | A |
| frangrant water lily [PDF 112 KB] | Nymphaea odorata | C |
| garlic mustard [PDF 92 KB] | Alliaria petiolata | A |
| giant hogweed [PDF 93 KB] | Heracleum mantegazzianum | A |
| goatsrue [PDF 91 KB] | Galega officinalis | A |
| [Top of Page] | ||
| gorse [PDF 93 KB] | Ulex europaeus | B |
| grass-leaved arrowhead [PDF 93 KB] | Sagittaria graminea | B |
| hairy whitetop [PDF 95 KB] | Cardaria pubescens | C |
| hairy willow-herb [PDF 97 KB] | Epilobium hirsutum | C |
| hawkweed, oxtongue [PDF 92 KB] | Picris hieracioides | B |
| hawkweed, common [PDF 92 KB] | Hieracium lachenalii | C |
| hawkweed, European [PDF 92 KB] | Hieracium sabaudum | A |
| hawkweed, mouseear [PDF 96 KB] | Hieracium pilosella | B |
| hawkweed, orange [PDF 94 KB] | Hieracium aurantiacum | B |
| hawkweed, polar [PDF 92 KB] | Hieracium atratum | B |
| hawkweed, queen-devil [PDF 92 KB] | Hieracium glomeratum | B |
| hawkweed, smooth [PDF 92 KB] | Hieracium laevigatum | B |
| hawkweed, yellow [PDF 92 KB] | Hieracium caespitosum | B |
| hawkweed, yellow devil [PDF 93 KB] | Hieracium floribundum | A |
| hawkweeds, nonnative and invasive species not listed elsewhere [PDF 118 KB] | Hieracium spp. | C |
| herb-Robert [PDF 99 KB] | Geranium robertianum | B |
| Himalayan blackberry [PDF 96 KB] | Rubus armeniacus | C |
| hoary alyssum [PDF 91 KB] | Berteroa incana | B |
| hoary cress [PDF 87 KB] | Cardaria draba | C |
| houndstongue [PDF 93 KB] | Cynoglossum officinale | B |
| [Top of Page] | ||
| hydrilla [PDF 97 KB] | Hydrilla verticillata | A |
| indigobush [PDF 95 KB] | Amorpha fruticosa | B |
| johnsongrass [PDF 97 KB] | Sorghum halepense | A |
| jointed goatgrass [PDF 102 KB] | Aegilops cylindrica | C |
| knapweed, bighead [PDF 92 KB] | Centaurea macrocephala | A |
| knapweed, black [PDF 92 KB] | Centaurea nigra | B |
| knapweed, brown [PDF 92 KB] | Centaurea jacea | B |
| knapweed, diffuse [PDF 85 KB] | Centaurea diffusa | B |
| knapweed, meadow [PDF 104 KB] | Centaurea jacea x nigra | B |
| knapweed, Russian [PDF 89 KB] | Acroptilon repens | B |
| knapweed, spotted [PDF 87 KB] | Centaurea stoebe | B |
| knapweed, Vochin [PDF 93 KB] | Centaurea nigrescens | A |
| knotweed, Bohemian [PDF 100 KB] | Polygonum bohemicum | B |
| knotweed, giant [PDF 111 KB] | Polygonum sachalinense | B |
| knotweed, Himalayan [PDF 107 KB] | Polygonum polystachyum | B |
| knotweed, Japanese [PDF 100 KB] | Polygonum cuspidatum | B |
| kochia [PDF 95 KB] | Kochia scoparia | B |
| kudzu [PDF 93 KB] | Pueraria montana var. lobata | A |
| lawnweed [PDF 103 KB] | Soliva sessilis | B |
| lepyrodiclis [PDF 92 KB] | Lepyrodiclis holosteoides | B |
| [Top of Page] | ||
| longspine sandbur [PDF 96 KB] | Cenchrus longispinus | B |
| loosestrife, garden [PDF 92 KB] | Lysimachia vulgaris | B |
| loosestrife, purple [PDF 93 KB] | Lythrum salicaria | B |
| loosestrife, wand [PDF 92 KB] | Lythrum virgatum | B |
| meadow clary [PDF 92 KB] | Salvia pratensis | A |
| old man's beard [PDF 109 KB] | Clematis vitalba | C |
| oxeye daisy [PDF 92 KB] | Leucanthemum vulgare | B |
| parrotfeather [PDF 96 KB] | Myriophyllum aquaticum | B |
| perennial pepperweed [PDF 98 KB] | Lepidium latifolium | B |
| perennial sowthistle [PDF 92 KB] | Sonchus arvensis ssp. arvensis | B |
| poison-hemlock [PDF 94 KB] | Conium maculatum | B |
| policeman's helmet [PDF 97 KB] | Impatiens glandulifera | B |
| puncturevine [PDF 97 KB] | Tribulus terrestris | B |
| purple starthistle [PDF 93 KB] | Centaurea calcitrapa | A |
| reed canarygrass [PDF 92 KB] | Phalaris arundinacea | C |
| reed sweetgrass [PDF 98 KB] | Glyceria maxima | A |
| ricefield bulrush [PDF 93 KB] | Schoenoplectus mucronatus | A |
| rush skeletonweed [PDF 92 KB] | Chondrilla juncea | B |
| sage. clary [PDF 93 KB] | Salvia sclarea | A |
| sage, Mediterranean [PDF 92 KB] | Salvia aethiopis | A |
| [Top of Page] | ||
| saltcedar [PDF 99 KB] | Tamarix ramosissima | B |
| scentless mayweed [PDF 112 KB] | Matricaria perforata | C |
| Scotch broom [PDF 85 KB] | Cytisus scoparius | B |
| shiny geranium [PDF 93 KB] | Geranium lucidum | A |
| silverleaf nightshade [PDF 92 KB] | Solanum elaeagnifolium | A |
| smoothseed alfalfa dodder [PDF 100 KB] | Cuscuta approximata | C |
| Spanish broom [PDF 101 KB] | Spartium junceum | A |
| spikeweed [PDF 95 KB] | Hemizonia pungens | C |
| spiny cocklebur [PDF 92 KB] | Xanthium spinosum | C |
| spurge flax [PDF 92 KB] | Thymelaea passerina | A |
| spurge laurel [PDF 104 KB] | Daphne laureola | B |
| spurge, leafy [PDF 102 KB] | Euphorbia esula | B |
| spurge, myrtle [PDF 105 KB] | Euphorbia myrsinites | B |
| sulfur cinquefoil [PDF 93 KB] | Potentilla recta | B |
| swainsonpea [PDF 92 KB] | Sphaerophysa salfula | B |
| Syrian bean-caper [PDF 93 KB] | Zygophyllum fabago | A |
| tansy ragwort [PDF 88 KB] | Senecio jacobaea | B |
| Texas blueweed [PDF 92 KB] | Helianthus ciliaris | A |
| thistle, bull [PDF 93 KB] | Cirsium vulgare | C |
| thistle, Canada [PDF 84 KB] | Cirsium arvense | C |
| [Top of Page] | ||
| thistle, Italian [PDF 92 KB] | Carduus pycnocephalus | A |
| thistle, milk [PDF 104 KB] | Silybum marianum | A |
| thistle, musk [PDF 93 KB] | Carduus nutans | B |
| thistle, plumeless [PDF 98 KB] | Carduus acanthoides | B |
| thistle, Scotch [PDF 98 KB] | Onopordum acanthium | B |
| thistle, slenderflower [PDF 92 KB] | Carduus tenuiflorus | A |
| variable-leaf milfoil [PDF 93 KB] | Myriophyllum heterophyllum | A |
| velvetleaf [PDF 92 KB] | Abutilon theophrasti | A |
| water primrose [PDF 92 KB] | Ludwigia hexapetala | B |
| white bryony [PDF 90 KB] | Bryonia alba | B |
| white cockle [PDF 95 KB] | Silene latifolia ssp. alba | C |
| wild carrot [PDF 105 KB] | Daucus carota | B |
| wild chervil [PDF 94 KB] | Anthriscus sylvestris | B |
| wild four o'clock [PDF 100 KB] | Mirabilis nyctaginea | A |
| yellow archangel [PDF 112 KB] | Lamiastrum galeobdolon | C |
| yellow flag iris [PDF 99 KB] | Iris pseudacorus | C |
| yellow floating heart [PDF 95 KB] | Nymphoides peltata | B |
| yellow nutsedge [PDF 92 KB] | Cyperus esculentus | B |
| yellow starthistle [PDF 92 KB] | Centaurea solstitialis | B |
| Yellow toadflax [PDF 102 KB] | Linaria vulgaris | C |
Contents copyright © 2009-12 WSDA
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