Common name

Scientific name

Designated for control in:

alyssum, hoary

Berteroa incana

All of Region 3 except Okanogan County; Okanogan County except Ranges 29 through 31 East of Townships 37 through 40 North

arrowhead, grass-leaved

Sagittaria graminea

All of Region 3

blackgrass

Alopecurus myosuroides

All of Region 3

blueweed

Echium vulgare

All of Region 3

broom, Scotch

Cytisus scoparius

All of Region 3

bryony, white

Byronia alba

All of Region 3

bugloss, common

Anchusa officinalis

All of Region 3

bugloss, annual

Anchusa arvensis

All of Region 3

camelthorn

Alhagi maurorum

All of Region 3

carrot, wild

Daucus carota

All of Region 3 (except where intentionally cultivated

catsear, common

Hypochaeris radicata

All of Region 3

chervil, wild

Anthriscus sylvestris

All of Region 3

cinquefoil, sulfur

Potentilla recta

All of Region 3

cordgrass, smooth

Spartina alterniflora

All of Region 3

cordgrass, common

Spartina anglica

All of Region 3

elodea, Brazilian

Egeria densa

All of Region 3

fanwort

Cabomba caroliniana

All of Region 3

fieldcress, Austrian

Rorippa austriaca

All of Region 3

floating heart, yellow

Nymphoides peltata

All of Region 3

gorse

Ulex europaeus

All of Region 3

hawkweed, mouseear

Hieracium pilosella

All of Region 3

hawkweed, orange

Hieracium aurantiacum

All of Region 3

hawkweed, polar

Hieracium atratum

All of Region 3

hawkweed queen-devil

Hieracium glomeratum

All of Region 3

hawkweed, smooth

Hieracium laevigatum

All of Region 3

hawkweed, yellow

Hieracium caespitosum

All of Region 3

hedgeparsley

Torilis arvensis

All of Region 3

helmet, policeman's

Impatiens gladulifera

All of Region 3

herb-Robert

Geranium robertianum

All of Region 3

houndstongue

Cynoglossum officinale

Chelan and Douglas Counties of Regions 3 and 6

indigobush

Amorpha fruticosa

All of Region 3

knapweed, black

Centaurea nigra

All of Region 3

knapweed, brown

Centaurea jacea

All of Region 3

knapweed, meadow

Centaurea jacea x nigra

All of Region 3

knapweed, spotted

Centaurea biebersteinii

All of Region 3

knotweed, Bohemian

Polygonum bohemicum

Chelan and Douglas counties of Region 3 and 6

knotweed, Japanese

Polygonum cuspidatum

Chelan and Douglas counties of Region 3 and 6

lepyrodiclis

Lepyrodiclis holosteoides

All of Region 3

loosestrife, garden

Lysimachia vulgaris

All of Region 3

loosestrife, purple

Lythrum salicaria

Region 3 except within 100 feet of the ordinary highway mark of the Okanogan River from the Canadian border south to Riverside

loosestrife, wand

Lythrum virgatum

Region 3 except within 100 feet of the ordinary highway mark of the Okanogan River from the Canadian border south to Riverside

nutsedge, yellow

Cyperus esculentus

All of Region 3

oxtongue, hawkweed

Picris hieracioides

All of Region 3

parrotfeather

Myriophyllum aquaticum

All of Region 3

pepperweed, perennial

Lepidium latifolium

All of Region 3

primrose, water

Ludwigia hexapetala

All of Region 3

ragwort, tansy

Senecio jacobaea

All of Region 3

saltcedar

Tamarix ramosissima

All of Region 3

sandbur, longspine

Cenchrus longispinus

All of Region 3

skeletonweed, rush

Chondrilla juncea

All of Region 3

sowthistle, perennial

Sonchus arvensis ssp. arvensis

All of Region 3

spurge, leafy

Euphorbia esula

All of Region 3

starthistle, yellow

Centaurea solstitialis

All of Region 3

swainsonpea

Sphaerophysa salsula

All of Region 3

thistle, musk

Carduus natans

All of Region 3

thistle, plumeless

Carduus acanthoides

All of Region 3

thistle, Scotch

Onopordum acanthium

All of Region 3

toadflax, Dalmatian

Linaria dalmatica ssp. dalmatica

Douglas County of Region 3 lying south of T25N and west of R25E Okanogan County lying within T 33, 34, 35N, R19, 20, 21, 22E, except the southwest, southeast, and northeast quarters of the northeast quarter of section 27, T35N, R31E; and the northeast quarter of the southeast quarter of section 27, T35N, R21E