YAKIMA COUNTY NOXIOUS WEED BOARD POLICY AND NOXIOUS WEED LIST

2024

YAKIMA COUNTY NOXIOUS WEED LIST

& CONTROL POLICY

The YAKIMA COUNTY NOXIOUS WEED BOARD (here in after referred to as the BOARD) shall promote weed control by personal contact with LANDOWNERS and through public media. The BOARD will also promote weed control through public seminars, hearings, demonstrations, field tours, school lectures, and at regularly scheduled board meetings. LANDOWNERS are responsible for the control of noxious weeds on their property as per RCW 17.10.140 prior to blooming stage, seed maturity and the development of a root system that would enable said weeds to propagate and spread.

The BOARD shall encourage landowners to control noxious weeds on their own property through their own means, or by means commercially available. Control is defined as stopping all seed production and containing the noxious weeds to the current infested locations. The Weed Board Coordinator and Inspectors will assist landowners in locating and identifying noxious weeds and encourage the landowner to report to the BOARD other noxious weed infestations. The BOARD, or AUTHORIZED STAFF, has the authority to enter all property within the jurisdiction of this BOARD for the purpose of administering the weed laws of the State of Washington under R.C.W. Chapter 17.10.160.

If the property owner does not promptly act to control the noxious weeds in accordance with R.C.W. 17.10 and this policy, the YAKIMA COUNTY NOXIOUS WEED BOARD may cause their being controlled at the expense of the landowner as per R.C.W. 17.10.170. Charges for regulatory work shall be incurred by the landowner based on the cost, including labor and materials and, if necessary, legal, and administrative fees. Such expenses, when necessary, shall constitute a lien against the property after a hearing and determination has been made on such expense and approved by the BOARD.

The W.A.C. Chapter 16.750 constitutes the Washington State Noxious Weed List, which is classified as “A”, “B”, and “C” weeds. The following shall constitute Yakima County’s Noxious Weed List and control is required within Yakima County.

All Class “A” Weeds

Class “B” Weeds, (All designated & those listed)

Class “C” Weeds, (listed)

All underlined weeds are educational only & no control is required.

The Yakima County Noxious Weed Board will conduct regularly scheduled meetings and will encourage public attendance and participation.

Resolution #55: The following requirements will be the policy for placing a weed on the County’s Noxious Weed List:

A. The Weed Board shall announce the noxious weed list within the guidelines set forth in R.C.W. 17.10.090.

B. The order in which a weed be submitted to the Board for consideration to be placed on the noxious weed list, the following information must be submitted to the Noxious Weed Board. 1. Location of weed, with an estimation of acreage.

2. Verification that adjacent property owners have been notified on the intent to have the weed placed on the Noxious Weed List.

3. Characteristics of the weed in consideration.

C. The Weed Board has the right to place the weed in question on a review and study list for a set period of time not to exceed one year and, at that time, make a policy statement on the weed in question.

YAKIMA COUNTY NOXIOUS WEED LIST FOR 2024

In accordance with R.C.W. 17.10 a County Noxious Weed List comprising the names of the following plants, which have been declared noxious by the State of Washington Noxious Weed Board, and Yakima County Weed Control Board. Said Board finds these plants to be weedy; highly destructive, competitive, or difficult to control by cultural or chemical practices. Said weeds shall comprise the NOXIOUS WEED LIST for Yakima County for 2023 or until another list is adopted by this Board.

Yakima County lies in Washington State Region 5 -----Highlighted plants designate changes made effective 1-1-24

ALL CLASS “A” NOXIOUS WEEDS (Mandatory Control) (** Known to be in Yakima County)

COMMON NAME:		SCIENTIFIC NAME:
Amaranth palmer 2024		Amaranthus palmeri 2024
common crupina		Crupina vulgaris
cordgrass, common		Spartina anglica
cordgrass, dense flower		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
French broom**		Genista monspessulan
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
Spanish broom**		Spartium junceum
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

CLASS “B” NOXIOUS WEEDS (**Known to be in Yakima County) (Class B designate-bd require mandatory control) (All underlined weeds are educational only & no control is required)

COMMON NAME:	SCIENTIFIC NAME:
blueweed bd	Echium vulgare
Brazilian elodea bd	Egeria densa
bugloss, annual bd	Lycopsis arvensis
bugloss, common bd	Anchusa officinalis
camelthorn bd	Alhagi maurorum
common fennel bd, (except bulbing fennel)	Foeniculum vulgare (except F. vulgare var. azoricum)
common reed** bd (nonnative genotypes only)	Phragmites australis
common tansy**	Tenacetum vulgare
Dalmatian toadflax**	Linaria dalmatica ssp. dalmatica
European coltsfoot bd	Tussilago farfara
fanwort bd	Cabomba caroliniana
gorse bd	Ulex europaeus
grass-leaved arrowhead bd	Sagittaria graminea
hairy willow-herb** bd	Epilobium hirsutum
hanging sedge bd	Carex pendula, & subsp.agastachys
hawkweed oxtongue bd	Picris hieracioides
hawkweed, orange** bd	Hieracium aurantiacum
hawkweeds: All nonnative species and hybrids of the meadow subgenus	Hieracium, subgenus Pilosella
hawkweeds: All nonnative species and hybrids of the wall subgenus	Hieracium, subgenus Hieracium
herb-Robert bd	Geranium robertianum
hoary alyssum bd	Berteroa incana
houndstongue** bd	Cynoglossum officinale
indigobush bd	Amorpha fruticosa
knapweed, black bd	Centaurea nigra
knapweed, brown bd	Centaurea jacea
knapweed, diffuse **	Centaurea diffusa
Knapweed, spotted**bd	Centaurea stoebe
knapweed, meadow** bd	Centaurea x gerstlaueri
knapweed, Russian **	Rhaponticum repens
knotweed, Bohemian bd	Fallopia x bohemica
knotweed, giant **bd	Fallopia sachalinensis
knotweed, Himalayan bd	Persicaria wallichii
kochia **	Bassia scoparia
Lesser celandine bd	Ficaria verna
knotweed, Japanese** bd	Fallopia japonica
loosestrife, garden bd	Lysimachia vulgaris
loosestrife, purple** bd	Lythrum salicaria
loosestrife, wand bd	Lythrum virgatum
Malta starthistle bd	Centaurea melitensis
parrotfeather** bd	Myriophyllum aquaticum
perennial pepperweed**	Lepidium latifolium
poison hemlock **	Conium maculatum
policeman's helmet bd	Impatiens glandulifera
puncturevine **	Tribulus terrestris
ravenna grass**	Tripidium ravennae
rough chervil bd	Chaerophyllum temulum
rush skeletonweed** bd	Chondrilla juncea
saltcedar **bd (unless intentionally planted pre 2004)	Tamarix ramosissima
Scotch broom **bd	Cytisus scoparius
shiny geranium bd	Geranium lucidum
spurge flax bd	Thymelaea passerine
spurge laurel bd	Daphne laureola
spurge, leafy bd	Euphorbia virgata
spurge, myrtle** bd	Euphorbia myrsinites
sulfur cinquefoil **	Potentilla recta
tansy ragwort** bd	Jacobaea vulgaris
thistle, musk** bd	Carduus nutans
thistle, plumeless bd	Carduus acanthoides
thistle, Scotch** bd	Onopordum acanthium
velvetleaf ** bd certain areas	Abutilon theophrasti
water primrose bd	Ludwigia hexapetala
white bryony bd	Bryonia alba
wild basil / basil savory bd	Clinopodium vulgare
wild chervil **bd	Anthriscus sylvestris
yellow archangel** bd	Lamiastrum galeobdolon
yellow floating heart** bd	Nymphoides peltata
yellow nutsedge **	Cyperus esculentus
yellow starthistle ** bd	Centaurea solstitialis

Class “C” Noxious Weeds (All underlined weeds are educational only & no control is required)

COMMON NAME:	SCIENTIFIC NAME:
absinth wormwood **	Artemisia absinthium
black henbane **	Hyoscyamus niger
cereal rye **	Secale cereale
common barberry	Berberis vulgaris
common catsear	Hypochaeris radicata
English ivy 4 cultivars only:	Hedera helix 'Baltica', 'Pittsburgh', and 'Star', H. hibernica 'Hibernica'
Eurasian watermilfoil hybrid	Myriophyllum spicatum x M. sibiricum
European, American beachgrass & hybrids	Ammophila arenariam A. breviligulata, & A. arenaria x breviligulata
Green alkanet	Pentaglottis sempervirens
hairy whitetop **	Lepidium appelianum
hoary cress **	Lepidium draba
Italian arum**	Arum italicum
jointed goatgrass	Aegilops cylindrica
jubata grass**	Cortaderia jubata
old man's beard **	Clematis vitalba
oxeye daisy **	Leucanthemum vulgare

COMMON NAME:	SCIENTIFIC NAME:
pampas grass**	Cortaderia selloana
perennial sowthistle **	Sonchus arvensis ssp. arvensis
scentless mayweed **	Tripleurospermum inodorum
smoothseed alfalfa dodder **	Cuscuta approximata
spikeweed	Hemizonia pungens
spiny cocklebur **	Xanthium spinosum
spotted jewelweed	Impatiens capensis
Swainsonpea **	Sphaerophysa salsula
thistle, Canada **	Cirsium arvense
Control only in T7N R20, 21,22,23E
tree-of-heaven **	Ailanthus altissima
white cockle	Silene latifolia
Wild carrot**	Daucus carota except subsp sativa
yellow flag iris **	Iris pseudacorus
yellow toadflax	Linaria vulgaris

For a complete listing of the State Weed List go to www. nwcb.wa.gov/ or stop by the Yakima County Weed Board Office for a copy of the State Weed List.

-----Highlighted plants designate changes made effective 1-1-24

YAKIMA COUNTY NOXIOUS WEED BOARD POLICY AND NOXIOUS WEED LIST

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