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Thurston
County Noxious Weed List
Following the adoption of the State Noxious
Weed Control list, the Thurston County Weed Board adopts a list
that includes those mandated by the State of Washington that are
present in Thurston County, and
several others selected for control by the County. Thurston
County is included in region 5 of
WAC
16.750 State Noxious Weed List and Schedule of Monetary
Penalties.
The 2011 noxious
weed list for Thurston County is comprised of the
following species:
|
Common Name
|
Scientific Name
|
Photograph |
Video
clip |
| blueweed |
Echium Vulgare |
Weed
Image |
|
| buffalobur |
Solanum
rostratum |
Weed Image |
|
| bugloss, annual |
Anchusa arvensis |
Weed
Image |
|
| bugloss, common |
Anchusa
officinalis |
Weed Image |
|
| butterfly bush
(1) |
Buddleia davidii |
Weed
Image |
Video |
| chervil, wild |
Anthriscus
sylvestris |
Weed
Image |
Video |
| elodea,
Brazilian |
Egeria
densa |
Weed Image |
Video |
| fennel, common
except
variety, azoricum |
Foeniculum
vulgare |
Weed
Image |
Video |
| geranium,
shiny |
Geranium
Lucidum |
Weed Image |
|
| gorse |
Ulex europaeus |
Weed
Image |
Video |
| hawkweed, mouseear
(2) |
Hieracium pilosella |
Weed
Image |
Video |
| hawkweed, orange |
Hieracium aurantiacum |
Weed
Image |
Video |
| hawkweed, yellow devil |
Hieracium floribundum |
Weed
Image |
Video |
| hemlock, poison |
Conium maculatum |
Weed
Image |
|
| hogweed, giant |
Heracleum mantegazzianum |
Weed
Image |
Video |
| knapweed, diffuse |
Centaurea diffusa |
Weed
Image |
Video |
| knapweed, meadow (3) |
Centaurea jacea x nigra |
Weed
Image |
Video |
| knapweed, spotted |
Centaurea biebersteinii |
Weed
Image |
Video |
knotweed, Himalayan
(4)
(not accepted as yard waste or garbage at Thurston County
WARC disposal sites) |
Polygonum
polystachyum |
Weed
Image |
Video |
knotweed, Japanese
(4)
(not
accepted as yard waste or garbage at Thurston County WARC
disposal sites) |
Polygonum
cuspidatum |
Weed
Image |
Video |
knotweed, giant
(4)
(not
accepted as yard waste or garbage at Thurston County WARC
disposal sites) |
Polygonum sachalinense |
Weed
Image |
Video |
knotweed, Bohemian
(4)
(not
accepted as yard waste or garbage at Thurston County WARC
disposal sites) |
Polygonum Bohemicum |
Weed
Image |
Video |
| loosestrife, garden |
Lysimachia vulgaris |
Weed
Image |
|
| loosestrife, purple |
Lythrum salicaria |
Weed
Image |
Video |
| loosestrife, wand |
Lythrum virgatum |
Weed
Image |
|
| milfoil,
variable-leaf |
Myriophyllum heterophyllum |
Weed Image |
|
| nutsedge, yellow |
Cyperus esculentus |
Weed
Image |
|
| parrot feather |
Myroriophyllum Aquaticum |
Weed
Image |
Video |
| pepperweed,
perennial |
Lepidium
latifolium |
Weed Image |
|
| ragwort, tansy
(5) |
Senecio jacobaea |
Weed
Image |
Video |
| reed, common (nonnative genotypes
of) |
Phragmites australis |
Weed
Image |
|
| skeletonweed, rush |
Chondrilla juncea |
Weed
Image |
|
| sowthistle, perennial
(6) |
Sonchus arvensis
ssp.
arvensis |
Weed
Image |
|
| spurge, laurel |
Daphne laureola |
Weed Image |
|
| thistle, Italian |
Carduus pycnocephalus |
Weed
Image |
|
| thistle, milk |
Silybum marianum |
Weed
Image |
|
| thistle, Scotch |
Onopordum acanthium |
Weed
Image |
|
| thistle, slenderflower |
Carduus tenuiflorus |
Weed
Image |
|
| toadflax, Dalmatian |
Linaria dalmatica
ssp.
dalmatica |
Weed
Image |
|
| velvetleaf |
Abutilon
thophrasti |
Weed Image |
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1. Control is required on transportation rights of way and
gravel mines only and below the ordinary highwater mark of the Nisqually River.
2. Only in portions of the County lying within T17N R1W S31; T16N R2W S30 W½, T16N R3W S25 SE¼,
T16N R3W S36 N½, T16N R2W S31 NW¼.
3. Except the area below the ordinary high-water
mark of the Nisqually River, downstream from Alder Dam to Puget Sound.
4. Control is required on transportation
rights of way and gravel mines only.
5. Control is required when 25 or more plants are
present in an area of 20 acres or less.
6. Except
in sections 30, 31 and 32 of Township 19 North, Range 1 East.
Address
questions or comments about the weed list to:
tcweeds@co.thurston.wa.us
.
To help protect the state's resources, the
Washington State Noxious Weed Control Board adopts a State
Noxious Weed List each year. This list categorizes weeds into
three major classes - A, B and C - according to the seriousness
of the threat they pose to the state or a region of the state.
Contact
the Washington State Noxious Weed Control Board
to
participate in the weed listing process.
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