Eradication of Class A plants is required by law. law. by required is plants A Class of Eradication

designated for control in your area. your in control for designated

not become widespread in our forests. our in widespread become not Control Board to learn which Class B species are are species B Class which learn to Board Control

aggressively being targeted for eradication so it does does it so eradication for targeted being aggressively Please contact your County Noxious Weed Weed Noxious County your contact Please

limited in Washington. As a Class A noxious weed, it is is it weed, noxious A Class a As Washington. in limited

forest floors. Fortunately, its distribution is still still is distribution its Fortunately, floors. forest this species for control to meet local needs and priorities. and needs local meet to control for species this

parts of the country where it completely dominates dominates completely it where country the of parts counties in regions with widespread distribution can select select can distribution widespread with regions in counties

is highly invasive in many many in invasive highly is (above) mustard Garlic Designate in many counties. As with Scotch broom, broom, Scotch with As counties. many in Designate

widespread in Eastern WA, where it is a Class B Non- B Class a is it where WA, Eastern in widespread

selected for control in your area. your in control for selected

in Western WA, where it is a Class B-Designate, and and B-Designate, Class a is it where WA, Western in

Control Board to learn which Class C species are are species C Class which learn to Board Control

(above) is limited in distribution distribution in limited is (above) toadflax Dalmatian

Please contact your County Noxious Weed Weed Noxious County your contact Please

resources and encourage voluntary control. control. voluntary encourage and resources Frances Lucero, KCNWCP

control this species or may opt to provide educational educational provide to opt may or species this control

parts of the state. Counties may require landowners to to landowners require may Counties state. the of parts Laurel Baldwin, Whatcom County NWCB

Stevens County NWCB

(above) is widespread in many many in widespread is (above) blackberry Himalayan

Jennifer Andreas, WSU Extension Jennifer

(eliminated). (eliminated).

Class A noxious weed plants must be eradicated eradicated be must plants weed noxious A Class

from gaining a foothold in Washington. By law, all all law, By Washington. in foothold a gaining from

Cascades.

their distribution, and the goal is to prevent them them prevent to is goal the and distribution, their

designated for control in almost every county east of the the of east county every almost in control for designated

Non-native, invasive plants that are limited in in limited are that plants invasive Non-native, it does not become a problem statewide. Therefore, it is is it Therefore, statewide. problem a become not does it

Class A Weeds A Class abundant and to control and prevent its spread so that that so spread its prevent and control to and abundant

Washington. The goal is to contain it where it is already already is it where it contain to is goal The Washington.

Washington but still limited or absent in eastern eastern in absent or limited still but Washington

County, among others. others. among County, widespread. widespread.

(above) is widespread in western western in widespread is (above) broom Scotch County, Clark County, Franklin County, and Spokane Spokane and County, Franklin County, Clark County,

local level for weeds that are already already are that weeds for level local

for control in their county last year, including Adams Adams including year, last county their in control for

Allow flexibility of weed control at the the at control weed of flexibility Allow •

Washington. Several counties selected this species species this selected counties Several Washington.

(above) is widespread throughout throughout widespread is (above) thistle Canada to un-infested areas un-infested to

they occur and prevent their movement movement their prevent and occur they

populations to regions of the state where where state the of regions to populations

Restrict already established weed weed established already Restrict •

detected

Eileen Sande, Ferry County NWCB first are they when them eradicating by the primary goal. goal. primary the

Prevent small infestations from expanding expanding from infestations small Prevent • decided at the local level, with containment as as containment with level, local the at decided

a Class B species is already abundant, control is is control abundant, already is species B Class a

system is designed to: designed is system

provide education or technical consultation. technical or education provide where distribution is still limited. In regions where where regions In limited. still is distribution where

pose to Washington State. This classification classification This State. Washington to pose

if locally desired. Other counties may choose to to choose may counties Other desired. locally if in areas where they have not yet invaded or or invaded yet not have they where areas in

species and the seriousness of the threat they they threat the of seriousness the and species Class C status allows counties to require control control require to counties allows status C Class areas. They are designated for mandatory control control mandatory for designated are They areas.

B, and C – based on the distribution of each each of distribution the on based – C and B, species but does not require control of them. The The them. of control require not does but species these noxious weeds from spreading into new new into spreading from weeds noxious these

provides educational resources about these these about resources educational provides groups weeds into three major classes – A, A, – classes major three into weeds groups line” around and contain infested regions, to keep keep to regions, infested contain and around line”

agricultural industry. The State Weed Board Board Weed State The industry. agricultural Weed List each year (WAC 16-750). This list list This 16-750). (WAC year each List Weed in other areas. The statewide goal is to “draw the the “draw to is goal statewide The areas. other in

in WA or are of special interest to the state’s state’s the to interest special of are or WA in in some areas of the state, but absent or limited limited or absent but state, the of areas some in Weed Control Board adopts a State Noxious Noxious State a adopts Board Control Weed

Noxious weeds that are typically widespread widespread typically are that weeds Noxious Non-native, invasive species that are abundant abundant are that species invasive Non-native, economy, the Washington State Noxious Noxious State Washington the economy,

Class C Weeds C Class Weeds B Class To help protect the State’s resources and and resources State’s the protect help To

County Contacts County Contacts Adams (509) 659-1806 Snohomish (425) 388-7548 Adam - District #1 (509) 488-9023 Spokane (509) 477-5777 2020 Asotin (509) 243-2032 Stevens (509) 684-7590 Benton (509) 943-6005 Thurston (360) 786-5576 Washington State Benton - District #1 (509) 786-5609 Wahkiakum (360) 795-3852 Chelan (509) 667-6576 Walla Walla (509)-524-2688 Noxious Weed List Clallam (360) 417-2442 Whatcom (360) 778-6234 Clark (360) 397-6140 Whitman (509) 397-6261 Columbia (509) 382-9760 Yakima (509) 574-2180 Cowlitz (360) 577-3117 To learn more about noxious weeds and Douglas (WSU) (509) 745-8531 Ext. 6352 noxious weed control in Washington State, Ferry (509) 775-5225 Ext. 1111 please contact: Franklin (509) 545-3847 WA State Noxious Weed Control Board Garfield (509) 843-1913 P.O. Box 42560 Grant (509) 754-2011 Ext. 4710 Olympia, WA 98504-2560 Grant - District #1 (509) 750-8948 (360)-725-5764 Grant - District #2 (509) 288-2483 Email: [email protected] Grant - District #3 (509) 398-1870 Website: http://www.nwcb.wa.gov Grays Harbor (360) 482-2265 Or Island (360) 678-7992 WA State Department of Agriculture Jefferson (360) 379-5610 Ext. 205 21 North First Avenue #103 King (206) 477-9333 Yakima, WA 98902 Kitsap (360) 337-7157 Ext. 6261 (509) 249-6973 South American spongeplant, Limnobium Kittitas (509) 962-7007 laevigatum, is a new Class A noxious weed for Klickitat (509) 773-5810 2020. Eradication in Washington is now required Lewis (360) 740-1215 of this floating, aquatic perennial plant. Lincoln (509) 725-3646 Ext. 521 Mason (360) 427-9670 Ext. 592 Okanogan (509) 422-7165 List arranged alphabetically by: Pacific (360) 875-9425 COMMON NAME Pend Oreille (509) 447-2402 Pierce (253) 798-7263 San Juan (360) 376-3499 Cover photos of South American spongeplant Skagit (360) 416-1467 infestation and plant with female flower by Skamania (509) 427-3941 Jenifer Parsons, WA Department of Ecology Noxious Weeds are non-native plants Noxious weeds can: introduced to Washington State that can be • Lower crop yields • Reduce recreational opportunities (e.g., highly destructive, competitive, and difficult • Reduce forage quality fishing, hunting, swimming and hiking) to control. These plants invade our croplands, • Decrease land values rangeland, forests, parks, rivers, lakes, wetlands, • Destroy plant and animal habitat and estuaries causing both ecological and • Displace native plants • Increase erosion and wildfire risk economical damage that affects us all. • Clog waterways • And some are toxic to humans and livestock 2020 Washington State Noxious Weed List

Class A Noxious Weeds - Eradication required Class B Noxious Weeds-Continued Class C Noxious Weeds common crupina Crupina vulgaris gorse Ulex europaeus absinth wormwood Artemisia absinthium cordgrass, common Spartina anglica grass-leaved Sagittaria graminea Austrian fieldcress Rorippa austriaca cordgrass, dense- Spartina densiflora arrowhead babysbreath Gypsophila paniculata flowered hairy willowherb Epilobium hirsutum black henbane Hyoscyamus niger cordgrass, saltmeadow Spartina patens hawkweed oxtongue Picris hieracioides blackgrass Alopecurus myosuroides cordgrass, smooth Spartina alterniflora hawkweed, orange Hieracium aurantiacum buffalobur Solanum rostratum dyer’s woad Isatis tinctoria hawkweeds: All Hieracium, subgenus cereal rye Secale cereale eggleaf spurge Euphorbia oblongata nonnative species and Pilosella common barberry Berberis vulgaris false brome Brachypodium hybrids of the meadow common catsear Hypochaeris radicata sylvaticum subgenus common groundsel Senecio vulgaris floating primrose- Ludwigia peploides hawkweeds: All Hieracium, subgenus common St. Johnswort Hypericum perforatum nonnative species Hieracium willow common tansy Tanacetum vulgare and hybrids of the wall flowering rush Butomus umbellatus subgenus common teasel Dipsacus fullonum French broom Genista monspessulana herb-Robert Geranium robertianum curlyleaf pondweed Potamogeton crispus garlic mustard Alliaria petiolata hoary alyssum Berteroa incana English hawthorn Crataegus monogyna giant hogweed Heracleum houndstongue Cynoglossum officinale English ivy - four Hedera helix ‘Baltica’, mantegazzianum cultivars only (includes ‘Pittsburgh’, and ‘Star’; indigobush Amorpha fruticosa goatsrue Galega officinalis Atlantic ivy) H. hibernica ‘Hibernica’ knapweed, black Centaurea nigra hydrilla Hydrilla verticillata Eurasian watermilfoil Myriophyllum spicatum x knapweed, brown Centaurea jacea Johnsongrass Sorghum halepense hybrid M. sibiricum knapweed, diffuse Centaurea diffusa knapweed, bighead Centaurea macrocephala evergreen blackberry Rubus laciniatus knapweed, meadow Centaurea x moncktonii knapweed, Vochin Centaurea nigrescens field bindweed Convolvulus arvensis knapweed, Russian Rhaponticum repens kudzu Pueraria montana var. lobata fragrant waterlily Nymphaea odorata knapweed, spotted Centaurea stoebe meadow clary Salvia pratensis hairy whitetop Lepidium appelianum knotweed, Bohemian Polygonum x oriental clematis Clematis orientalis Himalayan blackberry Rubus armeniacus bohemicum purple starthistle Centaurea calcitrapa hoary cress Lepidium draba knotweed, giant Polygonum sachalinense reed sweetgrass Glyceria maxima Italian arum Arum italicum knotweed, Himalayan Persicaria wallichii ricefield bulrush Schoenoplectus Japanese eelgrass Zostera japonica knotweed, Japanese Polygonum cuspidatum mucronatus jointed goatgrass Aegilops cylindrica kochia Bassia scoparia sage, clary Salvia sclarea jubata grass Cortaderia jubata lesser celandine Ficaria verna sage, Mediterranean Salvia aethiopis lawnweed Soliva sessilis loosestrife, garden Lysimachia vulgaris silverleaf nightshade Solanum elaeagnifolium longspine sandbur Cenchrus longispinus loosestrife, purple Lythrum salicaria small-flowered Impatiens parviflora medusahead Taeniatherum caput- jewelweed loosestrife, wand Lythrum virgatum medusae South American Limnobium laevigatum Malta starthistle Centaurea melitensis nonnative cattail Typha species spongeplant parrotfeather Myriophyllum aquaticum species and hybrids Spanish broom Spartium junceum perennial pepperweed Lepidium latifolium (reminder, does not Syrian beancaper Zygophyllum fabago poison hemlock Conium maculatum include the native common cattail, Typha Texas blueweed Helianthus ciliaris policeman’s helmet Impatiens glandulifera latifolia) thistle, Italian Carduus pycnocephalus puncturevine Tribulus terrestris old man’s beard Clematis vitalba thistle, milk Silybum marianum Ravenna grass Saccharum ravennae oxeye daisy Leucanthemum vulgare thistle, slenderflower Carduus tenuiflorus rush skeletonweed Chondrilla juncea pampas grass Cortaderia selloana variable-leaf milfoil Myriophyllum saltcedar Tamarix ramosissima perennial sowthistle Sonchus arvensis ssp. heterophyllum Scotch broom Cytisus scoparius arvensis wild four-o’clock Mirabilis nyctaginea shiny geranium Geranium lucidum reed canarygrass Phalaris arundinacea spurge flax Thymelaea passerina Class B Noxious Weeds Russian olive Elaeagnus angustifolia spurge laurel Daphne laureola blueweed Echium vulgare scentless mayweed Matricaria perforata spurge, leafy Euphorbia virgata Brazilian elodea Egeria densa smoothseed alfalfa Cuscuta approximata spurge, myrtle Euphorbia myrsinites bugloss, annual Anchusa arvensis dodder sulfur cinquefoil Potentilla recta bugloss, common Anchusa officinalis spikeweed Centromadia pungens tansy ragwort Jacobaea vulgaris butterfly bush Buddleja davidii spiny cocklebur Xanthium spinosum thistle, musk Carduus nutans camelthorn Alhagi maurorum spotted jewelweed Impatiens capensis thistle, plumeless Carduus acanthoides common fennel, Foeniculum vulgare Swainsonpea Sphaerophysa salsula (except bulbing fennel) except F. vulgare var. thistle, Scotch Onopordum acanthium thistle, bull Cirsium vulgare azoricum) velvetleaf Abutilon theophrasti thistle, Canada Cirsium arvense common reed Phragmites australis water primrose Ludwigia hexapetala tree-of-heaven Ailanthus altissima (nonnative genotypes white bryony Bryonia alba ventenata Ventenata dubia only) wild chervil Anthriscus sylvestris white cockle Silene latifolia ssp. alba Dalmatian toadflax Linaria dalmatica ssp. yellow archangel Lamiastrum galeobdolon wild carrot (except Daucus carota dalmatica yellow floatingheart Nymphoides peltata where commercially Eurasian watermilfoil Myriophyllum spicatum yellow nutsedge Cyperus esculentus grown) European coltsfoot Tussilago farfara yellow starthistle Centaurea solstitialis yellow flag iris Iris pseudacorus fanwort Cabomba caroliniana yellow toadflax Linaria vulgaris