WSR 15-19-170
PROPOSED RULES
NOXIOUS WEED
CONTROL BOARD
[Filed September 23, 2015, 11:54 a.m.]
Original Notice.
Preproposal statement of inquiry was filed as WSR 15-14-018.
Title of Rule and Other Identifying Information: Chapter 16-750 WAC, State noxious weed list and schedule of monetary penalties. The board is proposing to amend the state noxious weed list for 2016. Specifically, the board is considering: The addition of three Class C noxious weeds; modification of one Class B designation; update of one scientific name, and removal of one Class C noxious weed.
Hearing Location(s): The Confluence Technology Center, 285 Technology Center Way, Wenatchee, WA 98801, on November 3, 2015, at 1:00-3:00 p.m.
Date of Intended Adoption: November 28, 2015.
Submit Written Comments to: Alison Halpern, Washington State Noxious Weed Control Board (WSNWCB), P.O. Box 42560, Olympia, WA 98504-2560, e-mail ahalpern@agr.wa.gov or noxiousweeds@agr.wa.gov, fax (360) 902-2094, by November 2, 2015.
Assistance for Persons with Disabilities: Contact Susie Allen by October 30, 2015, TTY (800) 833-6388 or 711.
Purpose of the Proposal and Its Anticipated Effects, Including Any Changes in Existing Rules: The Washington state noxious weed list provides the basis for noxious weed control efforts for county noxious weed control boards and other entities. It also provides guidelines for the WSNWCB. This proposal makes several amendments to WAC 16-750-005 through 16-750-015.
Reasons Supporting Proposal: WSNWCB is charged with updating the state noxious weed list on an annual basis to ensure it accurately reflects the noxious weed control priorities and noxious weed distribution.
Statutory Authority for Adoption: Chapter 17.10 RCW.
Statute Being Implemented: Chapter 17.10 RCW.
Rule is not necessitated by federal law, federal or state court decision.
Name of Proponent: WSNWCB, governmental.
Name of Agency Personnel Responsible for Drafting, Implementation, and Enforcement: Alison Halpern, 1111 Washington Street S.E., Olympia, WA 98504, (360) 902-2053.
No small business economic impact statement has been prepared under chapter 19.85 RCW. RCW 19.85.030 (1)(a) requires that an agency prepare a small business economic impact statement (SBEIS) for proposed rules that impose more than a minor cost on businesses in an industry. An analysis of the direct economic effects of the proposed rule amendments indicates that costs to small businesses would be negligible or none at all. A copy of the analysis is shown below, and it can also be obtained by contacting Alison Halpern, WSNWCB, P.O. Box 42560, Olympia, WA 98504-2560.
AN ANALYSIS TO DETERMINE IF A SMALL BUSINESS ECONOMIC IMPACT STATEMENT IS REQUIRED
Rule Summary: RCW 17.10.080 authorizes WSNWCB to adopt a state noxious weed list annually to make changes as deemed necessary and helpful in reducing the threat and impact of noxious weeds in the state. These annual changes to the weed list are based primarily on proposals received by the WSNWCB, and they are voted on in November following a public hearing. Possible changes to the weed list include but are not limited to: The addition of new species; deletion of species that have been eradicated or found to be less detrimental than originally predicted; changes in Class B areas designated for control; the change of noxious weed class of a species.
The current proposed changes to the 2016 noxious weed list include:
Changing the designation of common bugloss, Anchusa officinalis, in Chelan County.
Adding English hawthorn, Crataegus monogyna, as a Class C noxious weed.
Adding ventenata, Ventenata dubia, as a Class C noxious weed.
Adding medusahead, Taeniatherum caput-medusae, as a Class C noxious weed.
Remove lepyrodiclis, Lepyrodiclis holosteoides, from the noxious weed list.
Update scientific name of spikeweed from Hemizonia pungens to Centromadia pungens.
Purpose of this Analysis: RCW 19.85.030 requires agencies to prepare an SBEIS if the proposed rule will impose more than minor costs on businesses in an industry. The purpose of this analysis is to determine if the proposed changes to the 2016 noxious weed list will impose "more than minor costs" on the businesses directly affected by these proposed changes, which would thereby require WSNWCB to prepare a formal SBEIS.
Nature of Aforementioned Noxious Weed Species in Washington:
Proposed modifications of a Class B designation: The designation of one Class B noxious weed will be adjusted to better match existing distribution of this species in Chelan County, namely to undesignate common bugloss, Anchusa vulgaris, in the Entiat River Valley between the Columbia River confluence and Stormy Creek.
Proposed addition of Class C noxious weeds: English hawthorn (Crataegus monogyna) is a long-lived small tree and has been used in landscaping because of its white, showy flowers, bright red fruit, and sharp spines that made it useful as a hedgerow. It has been escaping cultivation in western Washington, particularly on San Juan Island, where it is encroaching on agricultural land and in natural areas. It is capable of hybridizing with the native western hawthorn. English hawthorn has been proposed as a Class C noxious weed. Control would not be required by the state and most counties have indicated they would (or already do) provide education but not require control at the local level. A few county weed boards indicated they might require control where English hawthorn has escaped. Adding this species as a noxious weed would not prohibit its transport or sale in the state of Washington.
Ventenata (Ventenata dubia) is a nonnative, invasive, winter annual grass that has rapidly expanded in perennial grass systems and in disturbed areas and managed areas in the past two decades throughout the Pacific Northwest. It is a particular problem in pasture, CRP, and hay production systems, where it can significantly reduce hay yields. Control would not be required by the state and most counties have indicated they would (or already do) provide education. Some counties have indicated they might require control of this invasive grass. Adding this species as a noxious weed would not prohibit its transport or sale in the state of Washington.
Medusahead (Taeniatherum caput-medusae) is a nonnative, invasive winter annual grass with long awns that can be somewhat spreading and twisting, and are covered in small barbs. The unpalatable grass invades many ecosystems, including grasslands and sagebrush steppe, where it significantly reduces native plants and valuable forage. Control would not be required by the state and most counties have indicated they would (or already do) provide education. Some counties have indicated they might require control of this invasive grass. Adding this species as a noxious weed would not prohibit its transport or sale in the state of Washington.
Proposed removal of a Class C noxious weed: Lepyrodiclis (Lepyrodiclis holosteoides) is a weedy, fast-growing annual plant in the pinks family. It had been considered problematic in pea and grain fields in Whitman County but currently does not appear to be of high concern.
Proposed change to a scientific name: The scientific name of one Class C noxious weed will be updated to improve consistency with national taxonomic standards: Hemizonia pungens → Centromadia pungens.
Affected Groups and the Cost of Compliance:
The horticultural industry: The horticultural industry is most likely to be indirectly impacted by the proposed listing of English hawthorn. However, it is unlikely that this listing will directly cause these businesses to lose sales, revenue, or jobs. The noxious weed list is separate from the Washington state department of agriculture (WSDA) quarantine list (chapter 16-752 WAC), which prohibits the sale and transport of particular species, thus these potential noxious weed listings would not directly prohibit the sales of this [the] plants. Nurseries selling this nonnative, invasive species could potentially experience a decrease in sales of this shrub by consumers who voluntarily choose not to purchase ornamental species that are listed noxious weeds. To help assess the magnitude of this indirect economic impact, the state weed board developed a survey through SurveyMonkey (https://www.surveymonkey.com/s/6DLMYYY).
A printed survey of the proposed listings for the four aforementioned invasive plants (along with a self-addressed stamped envelope) was mailed to one hundred twenty WSDA-licensed nurseries on August 26, 2015. The sampling strategy used was a systematic, random design so that at least three nurseries per county were included in the survey, with King, Pierce, and Spokane counties weighted more heavily based on demographics. Some counties such as Adams, Columbia, Douglas, and Wahkiakum had fewer than three retail nurseries and did not receive as many surveys. A link to the online survey was also e-mailed on August 26 to over eight hundred businesses licensed with WSDA that had provided e-mail addresses in their application.
We received a total of one hundred thirty-seven online responses between August 31 and September 13, 2015. Additionally, a total of forty-five paper-copy surveys were mailed back between August 16 and September 19 for a total of one hundred eighty-two unique responses. Seven paper surveys were returned to us as undeliverable.
Demographics of respondents: Of the total responding nurseries and landscaping companies, one hundred forty-five indicated that they were considered a small business as defined by RCW 19.85.020. Thirteen establishments were not small businesses. Four respondents were not sure if their businesses were considered small businesses, and twenty left this survey question blank. Nurseries participating in the surveys came from thirty-two different counties in Washington and two counties in Oregon. Two respondents noted that their businesses were situated in at least two counties.
Survey results:
Proposed modifications of current Class B designation: Class B noxious weeds are generally designated where they are absent, limited, or pose a serious threat to health, agriculture, or natural areas so the economic impact is not unreasonable. The proposed change in designation for one Class B noxious weed [can] not have a direct negative economic impact to any small businesses in the affected area, because the control requirement is being reduced.
Proposed addition of Class C noxious weeds:
Proposed addition of English hawthorn: Of one hundred sixty-one businesses that responded, only five (3.1%) noted that they stocked English hawthorn as part of their inventory. A total of one hundred fifty-three nurseries (95.0%) did not carry it, and three (1.9%) were not sure. Twenty-one respondents skipped the question. When asked if the possible listing of English hawthorn as a Class C noxious weed would cause their business to lose sales, only two of forty respondents (5%) indicated that it would cause a loss of sales or revenue. When asked for an estimate of potential loss of sales, one respondent entered $650, the other indicated an estimated loss of $500. One respondent noted that the nursery would never sell this species, one stressed the importance of education about the use of hawthorn as a hedge species and its beneficial uses, one noted that it was a great species for birds but was not suited and one nursery indicated that it sold the native hawthorn (Crataegus douglasii) only.
Proposed addition of ventenata: None (0%) of the one hundred seventy-one businesses indicated that they carried ventenata. A total of one hundred sixty-four (95.9%) nurseries responded that they did not stock ventenata and seven respondents (4.1%) were not sure if they carried it. When asked if the possible listing of ventenata as a Class C noxious weed would cause their business to lose sales, twenty-six of the thirty-one respondents (83.9%) said it would not cause a reduction in sales and five (16.1%) were not sure. Two respondents commented that they would never sell this species, with one noting that he or she saw the impact of ventenata in rangeland.
Proposed addition of medusahead: A total of one hundred seventy-three out of one hundred seventy-six responding nurseries (93.3%) indicated that they did not stock medusahead in their inventory. One business (0.6%) indicated that it carried medusahead, and two respondents (1.1%) were not sure if they carried it. When asked if the possible listing of medusahead as a Class C noxious weed would cause their business to lose sales, thirty-four of thirty-seven respondents (91.9%) indicated that it would not cause a loss of sales or revenue, and three respondents (8.1%) were not sure. One respondent commented that it would never be sold there, and another noted that it should be listed as a noxious weed based on what it has done in rangeland.
Proposed removal of a Class C noxious weed: None of the county weed boards require control of this Class C noxious weed. Removing lepyrodiclis will have no economic impact to landowners.
Proposed updating of scientific name of one noxious weed: Updating taxonomic names of noxious weeds will have no economic impact to landowners.
Alternatives to the Proposed Assessment:
Proposed modification of a current Class B designation: The alternative to the proposed modification to a Class B designation would be the [to] leave the designation the way it is. Landowners in the proposed affected area would still be required to control common bugloss.
Proposed addition of three Class C noxious weeds: The alternative to the proposed listings would be to not list English hawthorn, ventenata, and medusahead as Class C noxious weeds, resulting in a status quo of the current situation, whereby individual landowners or land managers have the option of voluntarily controlling these species. County noxious weed control boards could continue to educate about these species where they are a local concern, but control could not be mandated. 
Proposed removal of a Class C noxious weed: The alternative to removing lepyrodiclis is to leave it on the list. None of the county weed boards require control of this Class C noxious weed.
Proposed updating of scientific names of one noxious weed: The current scientific name, though outdated, would still be used by the WSNWCB.
Conclusions: Few, if any, small businesses will be directly impacted by these proposed changes to the 2016 noxious weed list. Two of the proposed additions are invasive, winter annual grasses that are not used as ornamental or landscaping species. Based on feedback from the horticultural industry, English hawthorn does not seem to be widely carried in the nursery trade, and it is unlikely that these businesses will experience more-than-minor negative impacts to overall sales or revenue, even those nurseries that carry these English hawthorn. Moreover, the proposed listing will not prohibit nurseries from selling this species. The WSNWCB is committed to working with the horticultural industry to mitigate any potential reductions in sales and use of English hawthorn and other invasive ornamentals. Noninvasive alternatives to this species are already featured in our highly successful and popular GardenWise: Noninvasive plants for your garden.
Based upon the above analysis, the WSNWCB concludes that direct minor costs – if any – imposed would affect less than ten percent of small businesses and would not exceed $100 in lost sales or revenue as a direct result of these proposed rule-making changes. Nor would any of these amendments to the noxious weed list directly cause the creation of or loss of any jobs. The WSNWCB concludes that small businesses will not be disproportionately impacted, nor would the proposed rule changes impose more than a minor cost on businesses in an industry. Therefore, we conclude that a formal SBEIS is not required.
A cost-benefit analysis is not required under RCW 34.05.328. WSNWCB is not one of the agencies listed in this section.
October [September] 23, 2015
Alison Halpern
Executive Secretary
AMENDATORY SECTION (Amending WSR 14-24-103, filed 12/2/14, effective 1/2/15)
WAC 16-750-011 State 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 and Pacific counties
(b)
region 2, except Kitsap and Snohomish counties
 
 
(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 officinalis
(a)
regions 1, 2, 3, ((4,)) 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)
The portion of Thurston County lying below the ordinary high-water mark of the Nisqually River in region 2
 
 
(b)
Cowlitz County of region 3
(6)
camelthorn, Alhagi maurorum
(a)
regions 1, 2, 3, 4, and 5
(b)
region 6, except Walla Walla County
(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 and 2
(b)
region 3, except Cowlitz County
 
 
(c)
Adams and Lincoln counties of region 5
 
 
(d)
Benton and Walla Walla counties of region 6
(10)
Eurasian watermilfoil, Myriophyllum spicatum
(a)
region 1, except Pacific and Mason counties
(b)
Island 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 and Lincoln counties of region 5
 
 
(f)
Asotin, Columbia, and Garfield counties of region 6
(11)
fanwort, Cabomba caroliniana
(a)
regions 2, 4, 5, and 6
(b)
region 1, except Grays Harbor
 
 
(c)
region 3, except Cowlitz County
(12)
gorse, Ulex europaeus
(a)
region 1, except Grays Harbor and Pacific counties
 
 
(b)
regions 2, 3, 4, 5, 6
(13)
grass-leaved arrowhead, Sagittaria graminea
(a)
region 1, except Mason County
(b)
region 2, except Snohomish County
 
 
(c)
regions 3, 4, 5, and 6
(14)
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)
Asotin, Columbia, and Garfield counties of region 6
(15)
hawkweed oxtongue, Picris hieracioides
(a)
regions 1, 2, 4, 5, and 6
(b)
region 3, except Skamania County
(16)
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
(17)
hawkweeds: All nonnative species and hybrids of the Meadow subgenus (Pilosella), including, but not limited to, mouseear (Hieraciumpilosella), 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 Pierce and Thurston counties
 
(c)
region 3, except Cowlitz County
 
(d)
Chelan, Douglas, and Okanogan counties of region 4
 
(e)
region 5, except Klickitat and Spokane counties
 
(f)
region 6
(18)
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 and Whatcom counties
 
(c)
region 4, except Stevens County
(19)
herb-Robert, Geranium robertianum
(a)
regions 4, 5, and 6
(20)
hoary alyssum, Berteroa incana
(a)
regions 1, 2, 3, and 6
(b)
region 4, except Pend Oreille County and those areas lying north of highway 20 in Ferry County
 
 
(c)
region 5, except Klickitat County
(21)
houndstongue, Cynoglossum officinale
(a)
regions 1, 2, and 3
(b)
Chelan County of region 4
 
 
(c)
Yakima, Grant and Adams counties of region 5
 
 
(d)
Benton County of region 6
(22)
indigobush, Amorpha fruticosa
(a)
regions 1, 2, and 4
(b)
Lewis and Skamania counties of region 3
 
 
(c)
region 5, except Klickitat County
(23)
knapweed, black, Centaurea nigra
(a)
regions 1, 2, 3, 4, 5, and 6
(24)
knapweed, brown, Centaurea jacea
(a)
regions 1, 2, 3, 4, 5, and 6
(25)
knapweed, diffuse, Centaurea diffusa
(a)
region 1, except Mason County
(b)
region 2
 
 
(c)
region 3, except Cowlitz County
 
 
(d)
Adams County of region 5
(26)
knapweed, meadow, Centaurea x moncktonii
(a)
regions 1 and 4
(b)
region 2, except Pierce and Whatcom counties
 
 
(c)
Thurston County of region 2, except below the ordinary high water mark of the Nisqually River
 
 
(d)
region 3, except Cowlitz County
 
 
(e)
region 5, except Kittitas and Klickitat counties
 
 
(f)
region 6, except Franklin and Walla Walla counties
(27)
knapweed, Russian, Acroptilon 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
(28)
knapweed, spotted, Centaurea stoebe
(a)
region 1, except Grays Harbor
(b)
region 2, except Whatcom County
 
 
(c)
region 3, except Cowlitz County
 
 
(d)
Ferry County of region 4
 
 
(e)
Adams, Grant and Yakima counties of region 5
 
 
(f)
region 6, except Columbia and Walla Walla counties
(29)
knotweed, Bohemian, Polygonum x bohemicum
(a)
Island County of region 2
(b)
Skamania County of region 3
 
 
(c)
region 4, except Stevens County
 
 
(d)
region 5, except Whitman and Yakima counties
 
 
(e)
region 6
(30)
knotweed, giant, Polygonum sachalinense
(a)
region 2, except King, Pierce, and Snohomish counties
(b)
region 3, except Cowlitz and Lewis counties
(c)
regions 4, 5, and 6
(31)
knotweed, Himalayan, Polygonum polystachyum
(a)
region 1, except Pacific County
(b)
region 2, except King and Pierce counties
 
 
(c)
Cowlitz, Lewis and Skamania counties of region 3
 
 
(d)
region 4, except Stevens County
 
 
(e)
regions 5 and 6
(32)
knotweed, Japanese, Polygonum cuspidatum
(a)
Island, San Juan, and Whatcom counties of region 2
(b)
Skamania County of region 3
 
 
(c)
region 4, except Okanogan and Stevens counties
 
 
(d)
region 5, except Spokane County
 
 
(e)
region 6
(33)
kochia, Kochia scoparia
(a)
regions 1, 2, and 3
 
 
(b)
Stevens and Pend Oreille counties of region 4
 
 
(c)
Adams County of region 5
(34)
lesser celandine, Ficaria verna
(a)
Snohomish County of region 2
 
 
(b)
Skamania County of region 3
 
 
(c)
Pend Oreille and Stevens counties of region 4
(35)
loosestrife, garden, Lysimachia vulgaris
(a)
regions 1, 2, 3, 4, 5, 6
(36)
loosestrife, purple, Lythrum salicaria
(a)
Clallam and Jefferson counties of region 1
(b)
region 2, except Kitsap, Pierce, 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)
Columbia, Garfield, and Walla Walla counties of region 6
(37)
loosestrife, wand, Lythrum virgatum
(a)
Clallam and Jefferson counties of region 1
(b)
region 2, except Kitsap, Pierce, 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)
Columbia, Garfield, and Walla Walla counties of region 6
(38)
parrotfeather, Myriophyllum aquaticum
(a)
region 1, except Pacific County
(b)
regions 2, 4, 5, and 6
 
 
(c)
Clark and Skamania counties of region 3
(39)
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
(40)
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 and Pend Oreille counties of region 4
 
 
(e)
Grant, Kittitas and Lincoln counties of region 5
(41)
policeman's helmet, Impatiens glandulifera
(a)
region 1, except Pacific County
(b)
region 2, except Pierce, Thurston, and Whatcom counties
 
 
(c)
region 3, except Clark County
 
 
(d)
regions 4, 5, and 6
(42)
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
(43)
rush skeletonweed, Chondrilla juncea
(a)
regions 1 and 3
(b)
region 2, except Kitsap County
 
 
(c)
region 4, except all areas of Stevens County south of Township 29
 
 
(d)
Kittitas and Yakima counties of region 5, and Adams County, except those areas lying east of Sage Road, the western border of Range 36
 
 
(e)
Asotin County of region 6
(44)
saltcedar, Tamarix ramosissima (unless intentionally planted prior to 2004)
(a)
regions 1, 3, 4, and 5
(b)
region 2, except King and Thurston counties
(c)
region 6, except Benton and Franklin counties
(45)
Scotch broom, Cytisus scoparius
(a)
regions 4 and 6
(b)
region 5, except Klickitat County
(46)
shiny geranium, Geranium lucidum
(a)
regions 1, 2, 4, 5, and 6
(b)
region 3, except Clark County
(47)
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
(48)
spurge, leafy, Euphorbia esula
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Spokane and Whitman counties
 
 
(c)
region 6, except Columbia and Garfield counties
(49)
spurge, myrtle, Euphorbia myrsinites
(a)
region 1, except Clallam and Jefferson counties
(b)
region 2, except King, Kitsap, and Whatcom counties
 
 
(c)
regions 3, 5, and 6
 
 
(d)
region 4, except Okanogan and Stevens counties
(50)
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
(51)
tansy ragwort, Senecio jacobaea
(a)
Island and San Juan counties of region 2
(b)
Clark and Wahkiakum counties of region 3
 
 
(c)
regions 4 and 6
 
 
(d)
region 5, except Klickitat County
(52)
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
(53)
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
(54)
thistle, Scotch, Onopordum acanthium
(a)
regions 1, 2, and 3
(b)
region 4, except Douglas County
 
 
(c)
region 5, except Spokane and Whitman counties
(55)
velvetleaf, Abutilon theophrasti
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Yakima County
(c)
region 6, except Franklin County
(56)
water primrose, Ludwigia hexapetala
(a)
regions 1, 2, 4, 5, and 6
(b)
region 3, except Cowlitz County
(57)
white bryony, Bryonia alba
(a)
regions 1, 2, 3, and 4
(b)
region 5, except Whitman County
 
 
(c)
Benton County of region 6
(58)
wild chervil, Anthriscus sylvestris
(a)
regions 1, 4, and 6
(b)
region 2, except Island and Whatcom counties
 
 
(c)
Wahkiakum and Lewis counties of region 3
 
 
(d)
region 5, except Whitman County
(59)
yellow archangel, Lamiastrum galeobdolon
(a)
Clallam County of region 1
(b)
Island, San Juan, Skagit, and Whatcom counties of region 2
 
 
(c)
Skamania and Wahkiakum counties of region 3
 
 
(d)
regions 4, 5, and 6
(60)
yellow floating heart, Nymphoides peltata
(a)
regions 1, 2, and 6
(b)
region 3, except Cowlitz County
 
 
(c)
region 4, except Stevens County
 
 
(d)
region 5, except Spokane County
(61)
yellow nutsedge, Cyperus esculentus
(a)
regions 1, 3, and 4
(b)
region 2, except Skagit and Thurston counties
 
 
(c)
region 5, except Klickitat and Yakima Counties
 
 
(d)
region 6, except Franklin and Walla Walla counties
(62)
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 14-24-103, filed 12/2/14, effective 1/2/15)
WAC 16-750-015 State 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
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'
field bindweed
Convolvulus arvensis
foxglove
Digitalis purpurea
fragrant water lily
Nymphaea odorata
hairy whitetop
Lepidium appelianum
hoary cress
Lepidium draba
Italian arum
Arum italicum
Japanese eelgrass
Zostera japonica
jointed goatgrass
Aegilops cylindrica
jubata grass
Cortaderia jubata
lawnweed
Soliva sessilis
((lepyrodiclis
Lepyrodiclis holosteoides))
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
smoothseed alfalfa dodder
Cuscuta approximata
spikeweed
((Hemizonia)) Centromadia pungens
spiny cocklebur
Xanthium spinosum
Swainsonpea
Sphaerophysa salsula
thistle, bull
Cirsium vulgare
thistle, Canada
Cirsium arvense
tree-of-heaven
Ailanthus altissima
ventenata grass
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