Class A Weeds: Non-native species whose distribution Class B Weeds: Non-native species presently limited to Class B Weeds - continued in Washington is still limited. Preventing new infestations portions of the State. Species are designated for control knotweed, Himalayan Polygonum polystachyum and eradicating existing infestations are the highest in regions where they are not yet widespread. Preventing knotweed, Japanese Polygonum cuspidatum priority. Eradication of all Class A plants is required by law. new infestations in these areas is mandated. In regions kochia Kochia scoparia where a Class B species is already abundant, control is bean-caper, Syrian Zygophyllum fabago loosestrife, garden Lysimachia vulgaris decided at the local level, with containment as the blueweed, Texas Helianthus ciliaris loosestrife, purple Lythrum salicaria primary goal. Please contact your County Noxious Weed loosestrife, wand Lythrum virgatum broom, French Genista monspessulana Control Coordinator to learn which species are parrotfeather Myriophyllum aquaticum broom, Spanish Spartium junceum designated in your area. buffalobur Solanum rostratum perennial pepperweed Lepidium latifolium bulrush, ricefield Schoenoplectus mucronatus blueweed Echium vulgare poison-hemlock Conium maculatum clary, meadow Salvia pratensis Brazilian elodea Egeria densa policeman’s helmet Impatiens glandulifera clematis, Oriental Clematis orientalis bugloss, annual Anchusa arvensis puncturevine Tribulus terrestris cordgrass, common Spartina anglica bugloss, common Anchusa officinalis rush skeletonweed Chondrilla juncea cordgrass, dense flower Spartina densiflora butterfly bush Buddleja davidii saltcedar Tamarix ramosissima cordgrass, salt meadow Spartina patens camelthorn Alhagi maurorum Scotch broom Cytisus scoparius cordgrass, smooth Spartina alterniflora common fennel Foeniculum vulgare spurge laurel Daphne laureola crupina, common Crupina vulgaris common reed Phragmites australis spurge, leafy Euphorbia esula false brome Brachypodium sylvaticum (nonnative genotypes) spurge, myrtle Euphorbia myrsinites flowering rush Butomus umbellatus Dalmatian toadflax Linaria dalmatica ssp. sulfur cinquefoil Potentilla recta flax, spurge Thymelaea passerina dalmatica tansy ragwort Senecio jacobaea four o'clock, wild Mirabilis nyctaginea Eurasian watermilfoil Myriophyllum spicatum thistle, musk Carduus nutans goatsrue Galega officinalis fanwort Cabomba caroliniana thistle, plumeless Carduus acanthoides hawkweed, European Hieracium sabaudum gorse Ulex europaeus thistle, Scotch Onopordum acanthium hawkweed, yellow devil Hieracium floribundum grass-leaved arrowhead Sagittaria graminea water primrose Ludwigia hexapetala hogweed, giant Heracleum mantegazzianum hairy willow-herb Epilobium hirsutum white bryony Bryonia alba hydrilla Hydrilla verticillata hawkweed oxtongue Picris hieracioides wild chervil Anthriscus sylvestris johnsongrass Sorghum halepense hawkweed, mouseear Hieracium pilosella yellow archangel Lamiastrum galeobdolon knapweed, bighead Centaurea macrocephala hawkweed, orange Hieracium aurantiacum yellow floating heart Nymphoides peltata knapweed, Vochin Centaurea nigrescens hawkweed, queen-devil Hieracium glomeratum yellow nutsedge Cyperus esculentus kudzu Pueraria montana var. lobata hawkweed, smooth Hieracium laevigatum yellow starthistle Centaurea solstitialis milfoil, variable-leaf Myriophyllum heterophyllum hawkweed, tall Hieracium piloselloides mustard, garlic Alliaria petiolata hawkweed, yellow Hieracium caespitosum nightshade, silverleaf Solanum elaeagnifolium herb-Robert Geranium robertianum primrose-willow, floating Ludwigia peploides hoary alyssum Berteroa incana sage, clary Salvia sclarea houndstongue Cynoglossum officinale sage, Mediterranean Salvia aethiopis indigobush Amorpha fruticosa shiny geranium Geranium lucidum knapweed, black Centaurea nigra spurge, eggleaf Euphorbia oblongata knapweed, brown Centaurea jacea sweetgrass, reed Glyceria maxima knapweed, diffuse Centaurea diffusa starthistle, purple Centaurea calcitrapa knapweed, meadow Centaurea jacea x nigra thistle, Italian Carduus pycnocephalus knapweed, Russian Acroptilon repens thistle, milk Silybum marianum knapweed, spotted Centaurea stoebe thistle, slenderflower Carduus tenuiflorus knotweed, Bohemian Polygonum x bohemicum velvetleaf Abutilon theophrasti knotweed, giant Polygonum sachalinense woad, dyers Isatis tinctoria

Class C Weeds continued Class C Weeds: Noxious weeds which are already swainsonpea Sphaerophysa salsula widespread in WA or are of special interest to the state’s teasel, common Dipsacus fullonum 2013 agricultural industry. The Class C status allows counties thistle, bull Cirsium vulgare to enforce control if locally desired. Other counties may thistle, Canada Cirsium arvense Washington choose to provide education, technical consultation or toadflax, yellow Linaria vulgaris other assistance. tree-of-heaven Ailanthus altissima water lily, fragrant Nymphaea odorata State absinth wormwood Artemisia absinthium whitetop, hairy Cardaria pubescens babysbreath Gypsophila paniculata wild carrot Daucus carota Noxious Weed List barberry, common Berberis vulgaris yellow flag iris Iris pseudacorus bindweed, field Convolvulus arvensis blackberry, evergreen Rubus laciniatus blackberry, Himalayan Rubus armeniacus To protect the State’s resources and economy, the blackgrass Alopecurus myosuroides Washington State Noxious Weed Control Board adopts catsear, common Hypochaeris radicata a State Noxious Weed List each year (WAC 16-750). cereal rye Secale cereale This list classifies weeds into three major classes – A, cockle, white Silene latifolia ssp. alba B, and C – based on the stage of invasion of each cocklebur, spiny Xanthium spinosum species and the seriousness of the threat they pose to curly-leaf pondweed Potamogeton crispus Washington State. This classification system: eel grass, Japanese Zostera japonica . Prevents small infestations from expanding by fieldcress, Austrian Rorippa austriaca eradicating them when they are first detected goatgrass, jointed Aegilops cylindrica . Restrict s already established weed populations to groundsel, common Senecio vulgaris regions of the state where they occur and prevent their hawkweed, common Hieracium lachenalii movement to un-infested areas hawkweeds, nonnative and Hieracium spp. . Provides flexibility and local control for weeds that invasive species not listed are already widespread. elsewhere hawkweed, polar Hieracium atratum To learn more about noxious weeds and noxious weed henbane, black Hyocyamus niger control in Washington State, please contact: hoary cress Cardaria draba ivy, English - four cultivars Hedera helix 'Baltica’, Washington State Noxious Weed Control Board only 'Pittsburgh', and 'Star'; H. P.O. Box 42560 hibernica 'Hibernica' Olympia, WA 98504-2560 lawnweed Soliva sessilis (360) 725-5764 lepyrodiclis Lepyrodiclis holosteoides Email: [email protected] old man's beard Clematis vitalba Website: http://www.nwcb.wa.gov oxeye daisy Leucanthemum vulgare Or reed canarygrass Phalaris arundinacea Washington State Department of Agriculture sandbur, longspine Cenchrus longispinus 21 North First Avenue #103 scentless mayweed Matricaria perforata Yakima, WA 98902 Common Teasel (Dipsacus fullonum), smoothseed alfalfa dodder Cuscuta approximata (509) 225-2604 a new 2013 Class C noxious weed sowthistle, perennial Sonchus arvensis ssp. Or arvensis Clallam County Noxious Weed Control Board th spikeweed Hemizonia pungens 223 E 4 St., Suite 15 Port Angeles WA 98362 St. Johnswort, common Hypericum perforatum (360) 417-2442 Please help protect Washington’s economy

and environment from noxious weeds!