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Skagit County Weeds
The following list includes the scientific and common names of noxious weeds
found in the county that are also listed by the Skagit County Noxious Weed
Control Board as of 1999. This list is a subset of the Washington State noxious
weed list. The State uses four classifications for noxious weeds:
- Class A Noxious Weeds pose a serious environmental or economic threat, are
not native to our state, and are of limited distribution or unrecorded within the state. Control and eradication is required statewide.
- Class B Designate Noxious Weeds are those whose populations within a region
are such that all seed production can be prevented within a calendar year.
Control is required in Skagit County.
- Class B Noxious Weeds pose a serious environmental or economic threat, are
not native to the state, and are of limited distribution within a limited
region or area. County weed boards decide which will be controlled.
- Class C Noxious Weeds include any other noxious weeds. County weed boards
decide which to control.
| Ann Dursch recommends the following local noxious weed information
source: dnr.metrokc.gov/wlr/lands/weeds/index.htm.
This King County website includes an up-to-date noxious weed list and
photos of many of the usual suspects. |
| Common Name |
Scientific Name |
Notes |
Class A Noxious Weeds
bean-caper, Syrian
blueweed, Texas
broom, Spanish
buffalobur
clary, meadow
cordgrass, salt meadow
eggleaf spurge
four o'clock
hawkweed, yellow devil
hogweed, giant
hydrilla
johnsongrass
knapweed, bighead
knapweed, Vochin
lawnweed
nightshade, silverleaf
peganum
sage, clary
sage, Mediterranean
saltcedar
spurge flax
starthistle, purple
thistle, Italian
thistle, milk
thistle, slenderflower
velvetleaf
woad, dyers |
Zygophyllum fabago
Helianthus ciliaris
Spartium junceum
Solanum rostratum
Salvia pratensis
Crupina vulgaris
Euphorbia oblongata
Mirabilis nyctaginea
Hieracium floribundum
Heracleum mantegazzianum
Hydrilla verticillata
Sorghum halepense
Cetaurea macrocephala
Centaurea nigrescens
Soliva sessilis
Solanum elaeagnifolium
Peganum harmala
Salvia sclarea
Salvia aethiopis
Tamarix ramosissima
Thymelaea passerina
Centaurea calcitrapa
Carduus pycnocephalus
Silybum marianum
Carduus tenuiflorus
Abutilon theophrasti
Isatis tinctoria |
|
Class B Designate Noxious Weeds
blackgrass
blueweed
bryony, white
bugloss, common
camelthorn
chervil, wild
fanwort
fieldcress, Austrian
gorse
hawkweed, mouseear
hawkweed, orange
hawkweed, oxtongue
hawkweed, yellow
hedgeparsley
indigobush
kochia
knapweed, black
knapweed, brown
knapweed, diffuse
knapweed, Russian
knapweed, spotted
lepyrodiclis
loosestrife, garden
loosestrife, purple
loosestrife, wand
nutsedge, yellow
parrotfeather
pepperweed, perennial
policeman's helmet
puncturevine
rocket, garden
sandbur, longspine
skeletonweed, rush
snapdragon, dwarf
sowthistle, perennial
spurge, leafy
starthistle, yellow
swainsonpea
thistle, musk
thistle, plumeless
thistle, Scotch |
Alopecurus myosuroides
Echium vulgare
Bryonia alba
Anchusa officianalis
Alhagi maurorum
Anthriscus sylvestris
Cambomba caroliniana
Rorica austriaca
Ulex europaeus
Hieraceum pilosella
Hieracium aurantiacum
Picris hieracioides
Hieracium caespitosum
Torilis arvensis
Amorpha fruiticosa
Kochia scoparia
Centaurea nigra
Centaurea jacea
Centaurea diffusa
Centaurea repens
Centaurea biebersteinii
Lepyrodiclis holosteoides
Lysimachia vulgaris
Lythrum salicaria
Lythrum virgatum
Cyperus esculentus
Myriophyllum aquaticum
Lepidium latifolium
Impatiens glandulifera
Tribulus terrestris
Eruca vesicaria ssp. sativa
Cenchrus longispinus
Condrilla juncea
Chaenorrhinum minus
Sonchus arvensis ssp. arvensis
Euphorbia esula
Centaurea solstitialis
Sphaerophysa salusa
Carduus nutans
Carduus acanthoides
Onopordum acanthium |
|
Class B Noxious Weeds
broom, Scotch
catsear, common
carrot, wild
cinquefoil, sulphur
cordgrass, smooth
cordgrass, common
daisy, oxeye
elodea, Brazilean
hawkweed, polar
hawkweed, smooth
herb-Robert
ragwort, tansy
toadflax, dalmation
watermilfoil |
Cytisis scoparius
Hypochaeris radicata
Daucus carota
Potentilla recta
Spartina alterniflora
Spartina anglica
Leucanthemum vulgare
Egeria densa
Hieracium atratum
Hieracium laevigatum
Geranium robertianum
Senecio jacobaea
Linaria dalmatica
Myriophyllum spicatum |
1
1
1
1
1
1 |
Class C Noxious Weeds
babysbreath
bindweed, field
canarygrass, reed
cockle, white
cocklebur, spiny
cress, hoary
dodder, smoothseed alfalfa
goatgrass, jointed
henbane, black
houndstongue
knotweed, giant
knotweed, Japanese
mayweed, scentless
poison hemlock
rye, cereal
spikeweed
tansy, common
toadflax, yellow
thistle, Canada
whitetop, hairy
wormwood, absinth |
Gysophila paniculata
Convolvulus arvensis
Phalaris arundinacea
Silene latifolia ssp. alba
Xanthium spinosum
Cardaria draba
Cuscuta approximata
Aegilops cylindrica
Hyoscyamus niger
Cynoglossum officinale
Polygonum glandulifera
Polygonum cuspidatum
Matricaria perforata
Conium maculatum
Secale cereale
Hezimonia pungens
Tanacetum vulgare
Linaria vulgaris
Cirsium arvense
Cardaria pubescens
Artemisia absinthium |
2
2
2
2
2 |
Notes:
1. Given priority status for control in Skagit County
2. Weeds selected for control in Skagit Coun
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