WSR 20-24-098
PERMANENT RULES
NOXIOUS WEED
CONTROL BOARD
[Filed November 30, 2020, 11:44 a.m., effective January 1, 2021]
Effective Date of Rule: January 1, 2021.
Purpose: The Washington state noxious weed list provides the basis for noxious weed control efforts for county and district weed control boards as well as other entities. This rule-making order amends chapter 16-750 WAC by:
WAC 16-750-005 adding one species to the class A list, Turkish thistle, Carduus cinereus.
WAC 16-750-011, Class B designation changes:
•Undesignating hawkweeds: All nonnative species and hybrids of the Wall subgenus, Hieracium, in Snohomish County of region 2.
•Designate Ravenna grass, Tripidium ravennae, in Chelan County of region 4.
•Designate saltcedar, Tamarix ramosissima, in Benton and Franklin counties of region 6.
•Designate spurge laurel, Daphne laureola, in Skamania County of region 3.
•Designate spurge, myrtle, Euphorbia myrsinites, in Stevens County of region 4.
•Designate tansy ragwort, Jacobaea vulgaris, in Klickitat County of region 5.
•Designate velvetleaf, Abutilon theophrasti, in Franklin County of region 6.
•Designate wild chervil, Anthriscus sylvestris, in Island County of region 2 and Clark, Cowlitz, and Skamania counties of region 3.
•Designate water primrose, Ludwigia hexapetala, in Cowlitz County of region 3.
•Designate white bryony, Bryonia alba, in Garfield County of region 6.
•Designate yellow archangel, Lamiastrum galeobdolon, in Cowlitz County of region 3.
•Designate yellow floating heart, Nymphoides peltata, in Cowlitz County of region 3.
Scientific name changes, WAC 16-750-011 and 16-750-015:
•Anchusa arvensis, annual bugloss to Lycopsis arvensis.
•Polygonum cuspidatum, Japanese knotweed to Fallopia japonica.
•Polygonum sachalinense, giant knotweed to Fallopia sachalinensis.
•Polygonum x bohemicum, Bohemian knotweed to Fallopia x bohemica.
•Saccharum ravennae, Ravenna grass to Tripidium ravennae.
•Matricaria perforata, scentless mayweed to Tripleurospermum inodorum.
•Silene latifolia ssp. alba, white cockle to Silene latifolia.
•Centaurea x moncktonii, meadow knapweed to Centaurea x gerstlaueri.
•Zostera japonica, Japanese eelgrass to Nanozostera japonica.
Citation of Rules Affected by this Order: Amending WAC 16-750-005, 16-750-011, and 16-750-015.
Statutory Authority for Adoption: Chapter 17.10 RCW.
Other Authority: Chapter 34.05 RCW.
Adopted under notice filed as WSR 20-20-126 on October 6, 2020.
Changes Other than Editing from Proposed to Adopted Version: Hanging sedge, Carex pendula, is not adopted or added to the class A noxious weed list WAC 16-750-005.
Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 0, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 0, Repealed 0.
Number of Sections Adopted at the Request of a Nongovernmental Entity: New 0, Amended 0, Repealed 0.
Number of Sections Adopted on the Agency's own Initiative: New 0, Amended 3, Repealed 0.
Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.
Number of Sections Adopted using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 0, Amended 0, Repealed 0.
Date Adopted: November 30, 2020.
Anthony Stadelman
Chairman
AMENDATORY SECTION(Amending WSR 19-24-052, filed 11/26/19, effective 1/1/20)
WAC 16-750-005State noxious weed list—Class A noxious weeds.
Common Name
Scientific Name
broom, French
Genista monspessulana
broom, Spanish
Spartium junceum
common crupina
Crupina vulgaris
cordgrass, common
Spartina anglica
cordgrass, dense-flowered
Spartina densiflora
cordgrass, salt meadow
Spartina patens
cordgrass, smooth
Spartina alterniflora
dyer's woad
Isatis tinctoria
eggleaf spurge
Euphorbia oblongata
false brome
Brachypodium sylvaticum
floating primrose-willow
Ludwigia peploides
flowering rush
Butomus umbellatus
garlic mustard
Alliaria petiolata
giant hogweed
Heracleum mantegazzianum
goatsrue
Galega officinalis
hydrilla
Hydrilla verticillata
Johnsongrass
Sorghum halepense
knapweed, bighead
Centaurea macrocephala
knapweed, Vochin
Centaurea nigrescens
kudzu
Pueraria montana var. lobata
meadow clary
Salvia pratensis
oriental clematis
Clematis orientalis
purple starthistle
Centaurea calcitrapa
reed sweetgrass
Glyceria maxima
ricefield bulrush
Schoenoplectus mucronatus
sage, clary
Salvia sclarea
sage, Mediterranean
Salvia aethiopis
silverleaf nightshade
Solanum elaeagnifolium
small-flowered jewelweed
Impatiens parviflora
South American spongeplant
Limnobium laevigatum
Syrian bean-caper
Zygophyllum fabago
Texas blueweed
Helianthus ciliaris
thistle, Italian
Carduus pycnocephalus
thistle, milk
Silybum marianum
thistle, slenderflower
Carduus tenuiflorus
thistle, Turkish
Carduus cinereus
variable-leaf milfoil
Myriophyllum heterophyllum
wild four o'clock
Mirabilis nyctaginea
AMENDATORY SECTION(Amending WSR 19-24-052, filed 11/26/19, effective 1/1/20)
WAC 16-750-011State noxious weed list—Class B noxious weeds.
 
Name
 
Will be a "Class B designate" in all
lands lying within:
(1)
blueweed, Echium vulgare
(a)
regions 1, 2, 3, 4, 6
 
 
(b)
region 5, except Spokane County
(2)
Brazilian elodea, Egeria densa
(a)
region 1, except Grays Harbor County
(b)
region 2, except Kitsap County
 
 
(c)
King County of region 2, except lakes Dolloff, Fenwick, Union, Washington, and Sammamish, and the Sammamish River
 
 
(d)
region 3, except Wahkiakum County
 
 
(e)
regions 4, 5, and 6
(3)
bugloss, annual, Anchusa arvensis
(a)
regions 1, 2, 3, 4, and 6
(b)
region 5, except Spokane County
(4)
bugloss, common, ((Anchusa))Lycopsis officinalis
(a)
regions 1, 2, 3, and 6
(b)
All of region 4 except those areas lying within the Entiat River Valley between the Columbia River confluence and Stormy Creek in Chelan County
 
 
(c)
region 5, except Spokane County
(5)
butterfly bush, Buddleja davidii
(a)
Grays Harbor County of region 1
 
 
(b)
San Juan County of region 2
 
 
(c)
Cowlitz County of region 3
(6)
camelthorn, Alhagi maurorum
(a)
regions 1, 2, 3, 4, 5, and 6
(7)
common fennel, Foeniculum vulgare (except bulbing fennel, F. vulgare var. azoricum)
(a)
region 1, except Jefferson County
 
(b)
region 2, except King and Skagit counties
 
 
(c)
region 3, except Clark County
 
 
(d)
regions 4, 5, and 6
(8)
common reed, Phragmites australis (nonnative genotypes only)
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Grant County
(c)
Asotin, Columbia, and Garfield counties of region 6
(9)
Dalmatian toadflax, Linaria dalmatica ssp. dalmatica
(a)
regions 1, 2, and 3
(b)
Adams, Kittitas, and Lincoln counties of region 5
 
 
(c)
Benton, Franklin, and Walla Walla counties of region 6
(10)
Eurasian watermilfoil, Myriophyllum spicatum
(a)
region 1, except Pacific County
(b)
Island, Kitsap, and San Juan counties of region 2
 
 
(c)
Clark and Cowlitz counties of region 3
 
 
(d)
Chelan and Okanogan counties, and all lakes with public boat launches except Fan Lake in Pend Oreille County of region 4
 
 
(e)
Adams, Kittitas, Lincoln, and Whitman counties of region 5
 
 
(f)
Asotin, Columbia, and Garfield counties of region 6
(11)
European coltsfoot, Tussilago farfara
(a)
regions 1, 2, 3, 4, 5, and 6
 
 
(12)
fanwort, Cabomba caroliniana
(a)
regions 1, 2, 4, 5, and 6
(b)
region 3, except Cowlitz County
(13)
gorse, Ulex europaeus
(a)
region 1, except Grays Harbor and Pacific counties
 
 
(b)
regions 2, 3, 4, 5, 6
(14)
grass-leaved arrowhead, Sagittaria graminea
(a)
region 1
(b)
region 2, except Snohomish County
 
 
(c)
regions 3, 4, 5, and 6
(15)
hairy willow-herb, Epilobium hirsutum
(a)
regions 1, 3, and 4
(b)
region 2, except Thurston and Whatcom counties
 
 
(c)
region 5, except Klickitat County
 
 
(d)
region 6, except Benton and Franklin counties
(16)
hawkweed oxtongue, Picris hieracioides
(a)
regions 1, 2, 4, 5, and 6
(b)
region 3, except Skamania County
(17)
hawkweed, orange, Hieracium aurantiacum
(a)
regions 1, 3, and 6
(b)
region 2, except Whatcom County
 
 
(c)
region 4, except Pend Oreille and Stevens counties
 
 
(d)
region 5, except Kittitas and Spokane counties
(18)
hawkweeds: All nonnative species and hybrids of the Meadow subgenus (Pilosella), including, but not limited to, mouseear (Hieracium pilosella), pale (H. lactucella), queen-devil (H. glomeratum), tall (H. piloselloides), whiplash (H. flagellare), yellow (H. caespitosum), and yellow-devil (H. x floribundum)
(a)
region 1
 
(b)
region 2, except Thurston County
 
(c)
region 3, except Cowlitz County
 
(d)
region 4, except Pend Oreille and Stevens counties
 
(e)
region 5, except Klickitat and Spokane counties
 
(f)
region 6
(19)
hawkweeds: All nonnative species and hybrids of the Wall subgenus (Hieracium), including, but not limited to, common (Hieracium lachenalii), European (H. sabaudum), polar (H. atratum), smooth (H. laevigatum), spotted (H. maculatum), and wall (H. murorum)
(a)
regions 1, 3, 5, and 6
 
(b)
region 2, except King, Skagit, Snohomish, and Whatcom counties
 
(c)
region 4, except Stevens County
(20)
herb-Robert, Geranium robertianum
(a)
regions 4, 5, and 6
(21)
hoary alyssum, Berteroa incana
(a)
regions 1, 2, 3, and 6
(b)
region 4, except Pend Oreille and Ferry counties
 
 
(c)
region 5, except Klickitat County
(22)
houndstongue, Cynoglossum officinale
(a)
regions 1, 2, and 3
(b)
Chelan and Douglas counties of region 4
 
 
(c)
Yakima, Grant and Adams counties of region 5
 
 
(d)
Benton and Franklin counties of region 6
(23)
indigobush, Amorpha fruticosa
(a)
regions 1, 2, and 4
(b)
Lewis County of region 3
 
 
(c)
region 5, except Klickitat County
(24)
knapweed, black, Centaurea nigra
(a)
regions 1, 2, 3, 4, 5, and 6
(25)
knapweed, brown, Centaurea jacea
(a)
regions 1, 2, 3, 4, 5, and 6
(26)
knapweed, diffuse, Centaurea diffusa
(a)
region 1
(b)
region 2
 
 
(c)
region 3, except Cowlitz County
 
 
(d)
Adams County of region 5
(27)
knapweed, meadow, Centaureax ((moncktonii))gerstlaueri
(a)
regions 1 and 4
(b)
region 2, except Whatcom County
 
 
(c)
Thurston County of region 2, except below the ordinary high-water mark of the Nisqually River
 
 
(d)
Lewis and Wahkiakum counties of region 3
 
 
(e)
region 5, except Kittitas and Klickitat counties
 
 
(f)
region 6, except Franklin and Walla Walla counties
(28)
knapweed, Russian, Rhaponticum repens
(a)
regions 1, 2, and 3
(b)
Ferry and Pend Oreille counties of region 4
 
 
(c)
Lincoln, Spokane, and Whitman counties of region 5
 
 
(d)
Adams County of region 5, except for the area west of Highway 17 and north of Highway 26
 
 
(e)
Asotin and Garfield counties of region 6
(29)
knapweed, spotted, Centaurea stoebe
(a)
region 1, except Grays Harbor
(b)
region 2, except Whatcom County
 
 
(c)
Clark, Lewis, and Wahkiakum counties of region 3
 
 
(d)
Ferry County of region 4
 
 
(e)
Adams, Grant and Yakima counties of region 5
 
 
(f)
region 6, except Columbia and Walla Walla counties
(30)
knotweed, Bohemian, ((Polygonum x bohemicum))Fallopia x bohemica
(a)
Island and San Juan counties of region 2
(b)
Skamania County of region 3
 
 
(c)
region 4, 5, and 6
(31)
knotweed, giant, ((Polygonum sachalinense))Fallopia sachalinensis
(a)
region 2, except King, Pierce, and Snohomish counties
(b)
region 3, except Cowlitz and Lewis counties
(c)
regions 4, 5, and 6
(32)
knotweed, Himalayan, Persicaria wallichii
(a)
region 1, except Pacific County
(b)
region 2, except King and Pierce counties
 
 
(c)
region 3, except Wahkiakum County
 
 
(d)
region 4, 5, and 6
(33)
knotweed, Japanese, ((Polygonum cuspidatum))Fallopia japonica
(a)
Island, San Juan, and Whatcom counties of region 2
(b)
Skamania County of region 3
 
 
(c)
region 4, except Okanogan County
 
 
(d)
region 5, except Spokane County
 
 
(e)
region 6
(34)
kochia, Bassia scoparia
(a)
regions 1, 2, and 3
(b)
Stevens and Pend Oreille counties of region 4
 
 
(c)
Adams County of region 5
(35)
lesser celandine, Ficaria verna
(a)
region 1, 3, 4, 5, and 6
 
 
(b)
region 2, except King and Whatcom counties
(36)
loosestrife, garden, Lysimachia vulgaris
(a)
regions 1, 2, 3, 4, 5, 6
(37)
loosestrife, purple, Lythrum salicaria
(a)
Clallam, Jefferson, and Mason counties of region 1
(b)
region 2, except Kitsap, Skagit, and Snohomish counties
 
 
(c)
Clark, Lewis, and Skamania counties of region 3
 
 
(d)
region 4, except Douglas County
 
 
(e)
region 5, except Grant and Spokane counties
 
 
(f)
region 6, except Asotin and Franklin counties
(38)
loosestrife, wand, Lythrum virgatum
(a)
Clallam, Jefferson, and Mason counties of region 1
(b)
region 2, except Kitsap, Skagit, and Snohomish counties
 
 
(c)
Clark, Lewis, and Skamania counties of region 3
 
 
(d)
region 4, except Douglas County
 
 
(e)
region 5, except Grant and Spokane counties
 
 
(f)
region 6, except Asotin and Franklin counties
(39)
Malta starthistle, Centaurea melitensis
(a)
regions 1, 2, and 3
(b)
region 4, except T36 R38 in the area contained within Hwy 395/Hwy 20, Pingston Creek Road, and Highland Loop Road in Stevens County
 
 
(c)
region 5, except Klickitat and Whitman counties
(40)
parrotfeather, Myriophyllum aquaticum
(a)
region 1, except Pacific County
(b)
regions 2, 4, 5, and 6
 
 
(c)
Clark and Skamania counties of region 3
(41)
perennial pepperweed, Lepidium latifolium
(a)
regions 1, 2, and 4
(b)
region 3, except Clark and Cowlitz counties
 
 
(c)
Kittitas, Lincoln and Spokane counties of region 5
 
 
(d)
Columbia and Garfield counties of region 6
(42)
poison hemlock, Conium maculatum
(a)
Clallam, Mason, and Pacific counties of region 1
(b)
region 2, except King, Skagit, and Whatcom counties
 
 
(c)
Clark and Skamania counties of region 3
 
 
(d)
Chelan, Douglas, and Pend Oreille counties of region 4
 
 
(e)
Grant, Kittitas and Lincoln counties of region 5
(43)
policeman's helmet, Impatiens glandulifera
(a)
region 1, 3, 4, 5, and 6
(b)
region 2, except Thurston and Whatcom counties
(44)
puncturevine, Tribulus terrestris
(a)
regions 1, 2, and 3
(b)
Ferry, Pend Oreille, and Stevens counties of region 4
 
 
(c)
region 5, except Grant, Klickitat, and Yakima counties
(45)
Ravenna grass, ((Saccharum))Tripidium ravennae
(a)
Cowlitz County of region 3
(b)
region 4((, except Chelan County))
 
 
(c)
region 5, except Yakima County
 
 
(d)
region 6, except Benton County
(46)
rush skeletonweed, Chondrilla juncea
(a)
regions 1, 2, and 3
(b)
region 4, except all areas of Stevens County south of Township 29
 
 
(c)
Kittitas and Yakima counties of region 5, and Adams County, except those areas lying east of Sage Road, the western border of Range 36
 
 
(d)
Asotin County of region 6
(47)
saltcedar, Tamarix ramosissima (unless intentionally planted prior to 2004)
(a)
regions 1, 3, 4, ((and)) 5, and 6
(b)
region 2, except King and Thurston counties
(((c)
region 6, except Benton and Franklin counties))
(48)
Scotch broom, Cytisus scoparius
(a)
regions 4 and 6
(b)
region 5, except Klickitat County
(49)
shiny geranium, Geranium lucidum
(a)
regions 1, 4, 5, and 6
(b)
regions 2, except Thurston County
 
 
(c)
region 3, except Clark County
(50)
spurge flax, Thymelaea passerina
(a)
region 4, except Okanogan County
(b)
regions 5 and 6
(51)
spurge laurel, Daphne laureola
(a)
region 1, except Clallam and Jefferson counties
(b)
region 2, except King, Kitsap, and Pierce counties
 
 
(c)
region 3((, except Skamania County))
 
 
(d)
regions 4, 5, and 6
(52)
spurge, leafy, Euphorbia virgata
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Spokane County
 
 
(c)
region 6, except Columbia County
(53)
spurge, myrtle, Euphorbia myrsinites
(a)
region 1, except Clallam and Jefferson counties
(b)
region 2, except King, Kitsap, Pierce, and Whatcom counties
 
 
(c)
regions 3, 5, and 6
 
 
(d)
region 4, except Okanogan ((and Stevens counties))County
(54)
sulfur cinquefoil, Potentilla recta
(a)
region 1
(b)
region 2, except Pierce and Thurston counties
 
 
(c)
region 3, except Lewis and Skamania counties
 
 
(d)
Adams, Grant, Lincoln, and Whitman counties of region 5
 
 
(e)
region 6, except Asotin County
(55)
tansy ragwort, Jacobaea vulgaris
(a)
Island and San Juan counties of region 2
(b)
Clark and Wahkiakum counties of region 3
 
 
(c)
regions 4, 5, and 6
 
 
(((d)
region 5, except Klickitat County))
(56)
thistle, musk, Carduus nutans
(a)
regions 1, 2, 3, and 6
(b)
region 4, except Douglas and Ferry counties
 
 
(c)
region 5, except Kittitas County
(57)
thistle, plumeless, Carduus acanthoides
(a)
regions 1, 2, 3, 5, 6
(b)
region 4, except those areas north of State Highway 20 in Stevens County
(58)
thistle, Scotch, Onopordum acanthium
(a)
regions 1, 2, and 3
(b)
region 4, except Douglas County
 
 
(c)
region 5, except Spokane and Whitman counties
(59)
velvetleaf, Abutilon theophrasti
(a)
regions 1, 2, 3, ((and)) 4, and 6
(b)
region 5, except Yakima County
(((c)
region 6, except Franklin County))
(60)
water primrose, Ludwigia hexapetala
(a)
regions 1, 2, 3, 4, 5, and 6
(((b)
region 3, except Cowlitz County))
(61)
white bryony, Bryonia alba
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Whitman County
 
 
(c)
Benton ((County))and Garfield counties of region 6
(62)
wild chervil, Anthriscus sylvestris
(a)
regions 1, 3, 4, and 6
(b)
region 2, except ((Island and)) Whatcom ((counties))County
 
 
(c)
((Wahkiakum and Lewis counties of region 3
 
 
(d)))
region 5, except Whitman County
(63)
yellow archangel, Lamiastrum galeobdolon
(a)
Clallam County of region 1
(b)
Island, San Juan, Skagit, and Whatcom counties of region 2
 
 
(c)
Cowlitz, Skamania, and Wahkiakum counties of region 3
 
 
(d)
regions 4, 5, and 6
(64)
yellow floating heart, Nymphoides peltata
(a)
regions 1, 2, 3, and 6
(b)
((region 3, except Cowlitz County
 
 
(c)))
region 4, except Stevens County
 
 
(((d)))(c)
region 5, except Spokane County
(65)
yellow nutsedge, Cyperus esculentus
(a)
regions 1 and 4
(b)
region 2, except Skagit and Thurston counties
 
 
(c)
region 3, except Clark County
 
 
(d)
region 5, except Klickitat and Yakima counties
 
 
(e)
region 6, except Franklin and Walla Walla counties
(66)
yellow starthistle, Centaurea solstitialis
(a)
regions 1, 2, and 3
(b)
region 4, except T36 R38 in the area contained within Hwy 395/Hwy 20, Pingston Creek Road, and Highland Loop Road in Stevens County
 
 
(c)
region 5, except Klickitat, and Whitman counties
AMENDATORY SECTION(Amending WSR 17-24-035, filed 11/29/17, effective 1/1/18)
WAC 16-750-015State noxious weed list—Class C noxious weeds.
Common Name
Scientific Name
absinth wormwood
Artemisia absinthium
Austrian fieldcress
Rorippa austriaca
babysbreath
Gypsophila paniculata
black henbane
Hyoscyamus niger
blackberry, evergreen
Rubus laciniatus
blackberry, Himalayan
Rubus ((armeniacus))bifrons
blackgrass
Alopecurus myosuroides
buffalobur
Solanum rostratum
cereal rye
Secale cereale
common barberry
Berberis vulgaris
common catsear
Hypochaeris radicata
common groundsel
Senecio vulgaris
common St. Johnswort
Hypericum perforatum
common tansy
Tanacetum vulgare
common teasel
Dipsacus fullonum
curly-leaf pondweed
Potamogeton crispus
English hawthorn
Crataegus monogyna
English ivy 4 cultivars only:
Hedera hibernica 'Hibernica'
 
Hedera helix 'Baltica'
 
Hedera helix 'Pittsburgh'
 
Hedera helix 'Star'
Eurasian watermilfoil hybrid
Myriophyllum spicatum x M. sibiricum
field bindweed
Convolvulus arvensis
fragrant water lily
Nymphaea odorata
hairy whitetop
Lepidium appelianum
hoary cress
Lepidium draba
Italian arum
Arum italicum
Japanese eelgrass
((Zostera))Nanozostera japonica
jointed goatgrass
Aegilops cylindrica
jubata grass
Cortaderia jubata
lawnweed
Soliva sessilis
longspine sandbur
Cenchrus longispinus
Medusahead
Taeniatherum caput-medusae
nonnative cattail species and hybrids
Including, but not limited to, Typha angustifolia, T. domingensis and T. x glauca
old man's beard
Clematis vitalba
oxeye daisy
Leucanthemum vulgare
pampas grass
Cortaderia selloana
perennial sowthistle
Sonchus arvensis ssp. arvensis
reed canarygrass
Phalaris arundinacea
Russian olive
Elaeagnus angustifolia
scentless mayweed
((Matricaria perforata))Tripleurospermum inodorum
smoothseed alfalfa dodder
Cuscuta approximata
spikeweed
Centromadia pungens
spiny cocklebur
Xanthium spinosum
spotted jewelweed
Impatiens capensis
Swainsonpea
Sphaerophysa salsula
thistle, bull
Cirsium vulgare
thistle, Canada
Cirsium arvense
tree-of-heaven
Ailanthus altissima
ventenata
Ventenata dubia
white cockle
Silene latifolia((ssp. alba))
wild carrot (except where commercially grown)
Daucus carota
yellow flag iris
Iris pseudacorus
yellow toadflax
Linaria vulgaris