WSR 25-15-040
PERMANENT RULES
DEPARTMENT OF AGRICULTURE
[Filed July 9, 2025, 10:41 a.m., effective August 9, 2025]
Effective Date of Rule: Thirty-one days after filing.
Purpose: This rule-making order amends chapter 16-752 WAC, Noxious weed seed and plant quarantine, by adding a number of species to the noxious weed seed and plant quarantine, which would prohibit their sale and distribution. These species include:
• Common (English) ivy (Hedera helix);
• Atlantic/Boston ivy (Hedera hibernica);
• Spotted touch me not (Impatiens capensis);
• Cape pondweed (Aponogeton distachyos);
• Hanging sedge (Carex pendula, Carex pendula subsp. pedula [pendula] and Carex pendula subsp. agastachys);
• Green alkanet (Pentaglottis sempervirens);
• Common fennel (Foeniculum vulgare (except bulbing fennel, F. vulgare var. azoricum));
• European coltsfoot (Tussilago farfara);
• Herb-Robert (Geranium robertianum);
• Houndstongue (Cynoglossum officinale);
• Sulfur cinquefoil (Potentilla recta);
• Wild basil/basil savory (Clinopodium vulgare);
• Yellow nutsedge (Cyperus esculentus);
• Camelthorn (Alhagi maurorum);
• Russian knapweed (Rhaponticum repens);
• Puncturevine (Tribulus terrestris);
• Rough chervil (Chaerophyllum temulum);
• Turkish thistle (Carduus cinereus); and
• Palmer's amaranth (Amaranthus palmeri).
The amendment also clarifies that the Daucus carota subspecies sativus is not included in the noxious weed seed and plant quarantine.
Citation of Rules Affected by this Order: Amending WAC 16-752-610.
Statutory Authority for Adoption: RCW 17.10.074, 17.24.011, and 17.24.041.
Adopted under notice filed as WSR 25-10-101 on May 7, 2025.
Changes Other than Editing from Proposed to Adopted Version: A clerical correction was made to the spelling of green alkanet.
Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 0, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 0, Repealed 0.
Number of Sections Adopted at the Request of a Nongovernmental Entity: New 0, Amended 1, Repealed 0.
Number of Sections Adopted on the Agency's own Initiative: New 0, Amended 0, Repealed 0.
Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.
Number of Sections Adopted using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 0, Amended 0, Repealed 0.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: July 9, 2025.
Derek I. Sandison
Director
RDS-6236.3
AMENDATORY SECTION(Amending WSR 21-05-019, filed 2/8/21, effective 3/11/21)
WAC 16-752-610Regulated articles.
All plants, plant parts, and seeds in packets, blends, and "wildflower mixes" of the following listed species are designated as regulated articles under the terms of this noxious weed seed and plant quarantine. This list is comprised of the most recent and accepted scientific and common names of the quarantine plant species. Regulated status also applies to all synonyms of these botanical names and interspecies hybrids if both parents are regulated species:
Scientific Name
Common Names
Abutilon theophrasti
velvetleaf
Ailanthus altissima
tree-of-heaven
Alhagi maurorum
camelthorn
Alliaria petiolata
garlic mustard
Amaranthus palmeri
Palmer's amaranth
Amorpha fruticosa
indigobush, lead plant
Anchusa officinalis
common bugloss, alkanet, anchusa
Anthriscus sylvestris
wild chervil
Aponogeton distachyos
cape pondweed
Arum italicum
Italian arum
Arundo donax (except variegated cultivars)
giant reed
Bassia scoparia (syn. Kochia scoparia)
kochia, summer-cyprus, burning-bush, fireball, Mexican fireweed
Berteroa incana
hoary alyssum
Brachypodium sylvaticum
false brome
Buddleia davidii (except accepted sterile cultivars)
butterfly bush
Butomus umbellatus
flowering rush
Cabomba caroliniana
fanwort
Carduus acanthoides
plumeless thistle
Carduus cinereus
Turkish thistle
Carduus nutans
musk thistle, nodding thistle
Carduus pycnocephalus
Italian thistle
Carduus tenuiflorus
slenderflower thistle
Carex pendula, Carex pendula subsp. pedula and Carex pendula subsp. Agastachys
hanging sedge
Centaurea calcitrapa
purple starthistle
Centaurea diffusa
diffuse knapweed
Centaurea jacea
brown knapweed, rayed knapweed, brown centaury horse-knobs, hardheads
Centaurea macrocephala
bighead knapweed
Centaurea nigra
black knapweed
Centaurea nigrescens
Vochin knapweed
Centaurea stoebe
spotted knapweed
Centaurea x gerstlaueri (syn. Centaurea jacea x nigra)
meadow knapweed
Chaenorhinum minus
dwarf snapdragon
Chaerophyllum temulum
rough chervil
Clematis orientalis
oriental clematis
Clinopodium vulgare
wild basil/basil savory
Conium maculatum
poison hemlock
Crassula helmsii
Australian swamp stonecrop
Crupina vulgaris
common crupina
Cynoglossum officinale
houndstongue
Cyperus esculentus
yellow nutsedge
Cyperus rotundus
purple nutsedge
Cytisus scoparius
Scotch broom
Daphne laureola
spurge laurel
Daucus carota(except for subsp. sativus)
wild carrot, Queen Anne's lace
Echium vulgare
blueweed, blue thistle, blue devil, viper's bugloss, snake flower
Egeria densa
Brazilian elodea
Epilobium hirsutum
hairy willow herb
Euphorbia myrsinites
myrtle spurge
Euphorbia oblongata
eggleaf spurge
Euphorbia virgate (syn. Euphorbia esula)
leafy spurge
Fallopia japonica
Japanese knotweed
Fallopia sachalinensis
giant knotweed
Fallopia x bohemica
Bohemian knotweed
Ficaria verna
lesser celandine
Foeniculum vulgare (except bulbing fennel, F. vulgare var. azoricum)
common fennel
Galega officinalis
goatsrue
Genista monspessulana
French broom
Geranium lucidum
shiny geranium
Geranium robertianum
herb-Robert
Glossostigma diandrum
mud mat
Glyceria maxima
reed sweetgrass, tall manna grass
Gymnocoronis spilanthoides
Senegal tea plant
Hedera helix
common (English) ivy
Hedera hibernica
Atlantic/Boston ivy
Helianthus ciliaris
Texas blueweed
Heracleum mantegazzianum
giant hogweed, giant cow parsnip
Hibiscus trionum
Venice mallow, flower-of-an-hour, bladder ketmia, modesty, shoo-fly
Hieracium spp. All nonnative species and hybrids
nonnative hawkweeds
Hydrilla verticillata
hydrilla
Hydrocharis morsus-ranae
European frog-bit
Impatiens capensis
spotted touch-me-not
Impatiens glandulifera
policeman's helmet
Impatiens parviflora
small-flowered jewelweed
Iris pseudacorus
yellow flag iris
Isatis tinctoria
dyers' woad
Jacobaea vulgaris (syn. Senecio jacobaea)
tansy ragwort
Lagarosiphon major
African elodea
Lamiastrum galeobdolon
yellow archangel
Lepidium latifolium
perennial pepperweed
Leucanthemum vulgare
oxeye daisy, white daisy, whiteweed, field daisy, marguerite, poorland flower
Limnobium laevigatum
South American spongeplant
Limnobium spongia
American spongeplant
Linaria dalmatica spp. dalmatica
Dalmatian toadflax
Ludwigia hexapetala
water primrose
Ludwigia peploides
floating primrose-willow
Lycopsis arvensis
annual bugloss
Lysimachia vulgaris
garden loosestrife
Lythrum salicaria
purple loosestrife
Lythrum virgatum
wand loosestrife
Marsilea mutica
Australian water clover
Mirabilis nyctaginea
wild four o'clock, umbrella-wort
Murdannia keisak
marsh dew flower, Asian spiderwort
Myriophyllum aquaticum
parrotfeather
Myriophyllum heterophyllum
variable-leaf milfoil
Myriophyllum spicatum
Eurasian watermilfoil
Najas minor
slender-leaved naiad, brittle naiad
Nymphoides peltata
yellow floating heart
Onopordum acanthium
Scotch thistle
Pentaglottis sempervirens
green alkanet
Persicaria wallichii (syn. Polygonum polystachyum)
Himalayan knotweed
Potentilla recta
sulfur cinquefoil
Proboscidea louisianica
unicorn-plant
Pueraria montana var. lobata
kudzu
Rhaponticum repens
Russian knapweed
Sagittaria graminea
grass-leaved arrowhead
Sagittaria platyphylla
delta arrowhead
Salvia aethiopis
Mediterranean sage
Salvia pratensis
meadow clary
Salvia sclarea
clary sage
Schoenoplectus mucronatus
ricefield bulrush
Silybum marianum
milk thistle
Solanum elaeagnifolium
silverleaf nightshade
Solanum rostratum
buffaloburr
Soliva sessilis
lawnweed
Sorghum halepense
johnsongrass
Spartina alterniflora
smooth cordgrass
Spartina anglica
common cordgrass
Spartina densiflora
dense-flowered cordgrass
Spartina patens
salt meadow cordgrass
Spartium junceum
Spanish broom
Stratiotes aloides
water soldier
Tamarix ramosissima
saltcedar
Thymelaea passerina
spurge flax
Torilis arvensis
hedgeparsley
Trapa natans
water chestnut, bull nut
Trapa bicornus
water caltrap, devil's pod, bat nut
Tribulus terrestris
puncturevine
Tripidium ravennae
Ravenna grass
Tussilago farfara
European coltsfoot
Ulex europaeus
gorse, furze
Utricularia inflata
swollen bladderwort
Zygophyllum fabago
Syrian bean-caper
Reviser's note: The spelling error in the above section occurred in the copy filed by the agency and appears in the Register pursuant to the requirements of RCW 34.08.040.