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Region 9 Class B Weed Designates

Region 9 contains all lands lying within the boundaries of:

  • Benton and Klickitat counties

  • Yakima County and south of Highway 12 from the Yakima-Lewis County line to Yakima and south of Highway 82 from Yakima to the Yakima-Kittitas County line

  • Franklin County and west of Highway 395

Common name

Scientific name

Designated for control in:

alyssum, hoary

Berteroa incana

All of Region 9

arrowhead, grass-leaved

Sagittaria graminea

All of Region 9

blackgrass

Alopecurus myosuroides

All of Region 9

blueweed

Echium vulgare

All of Region 9

broom, Scotch

Cytisus scoparius

All of Region 9

bryony, white

Byronia alba

All of Region 9

bugloss, common

Anchusa officinalis

All of Region 9

bugloss, annual

Anchusa arvensis

All of Region 9

camelthorn

Alhagi maurorum

All of Region 9

carrot, wild

Daucus carota

Region 9, except Yakima County (except where intentionally cultivated)

catsear, common

Hypochaeris radicata

Region 9, except for Klickitat County

chervil, wild

Anthriscus sylvestris

All of Region 9

cinquefoil, sulfur

Potentilla recta

Region 9, except for Klickitat County

cordgrass, smooth

Spartina alterniflora

All of Region 9

cordgrass, common

Spartina anglica

All of Region 9

daisy, oxeye

Leucanthemum vulgare

Region 9, except those areas lying within Klickitat and Yakima counties west of Range 13 East

elodea, Brazilian

Egeria densa

All of Region 9

fanwort

Cabomba caroliniana

All of Region 9

fieldcress, Austrian

Rorippa austriaca

All of Region 9

floating heart, yellow

Nymphoides peltata

All of Region 9

gorse

Ulex europaeus

All of Region 9

hawkweed, mouseear

Hieracium pilosella

All of Region 9

hawkweed, orange

Hieracium aurantiacum

All of Region 9

hawkweed, polar

Hieracium atratum

All of Region 9

hawkweed queen-devil

Hieracium glomeratum

All of Region 9

hawkweed, smooth

Hieracium laevigatum

All of Region 9

hawkweed, yellow

Hieracium caespitosum

Region 9, except the following sections in Klickitat County:

  • sections 32, 33, and 34 of T6N, R12E

  • sections 4,5, 6, and 7 of T5N, R12E

  • section 12 of T5N, R11E

 

hedgeparsley

Torilis arvensis

Yakima, Benton, Franklin counties

Klickitat County, except those lands lying within:

  • T4N, R10E, R11E, R12E, R13E, R14E

  • T3N, R10E, R11E, R12E, R13E

  • T2N, R12E, R13E

helmet, policeman's

Impatiens gladulifera

All of Region 9

herb-Robert

Geranium robertianum

All of Region 9

indigobush

Amorpha fruticosa

Region 9, except within 200 feet of the Columbia River

knapweed, black

Centaurea nigra

All of Region 9

knapweed, brown

Centaurea jacea

All of Region 9

knapweed, diffuse

Centaurea diffusa

Franklin County of Region 9

knapweed, meadow

Centaurea jacea x nigra

All of Region 9

knapweed, spotted

Centaurea biebersteinii

All of Region 9

lepyrodiclis

Lepyrodiclis holosteoides

All of Region 9

loosestrife, garden

Lysimachia vulgaris

All of Region 9

loosestrife, purple

Lythrum salicaria

Region 9, except Benton County

loosestrife, wand

Lythrum virgatum

Region 9, except Benton County

nutsedge, yellow

Cyperus esculentus

Region 9, except those areas lying within the following boundary description within Yakima County:

  • beginning at the intersection of Highway 12 and Parker Heights Road, and

  • continuing easterly to Konnowac Pass Road,

  • follow said road north to the intersection of Konnowac Pass Road, and Nightingale Road

  • The northern boundary shall be the Roza Canal, continuing from the established point at Nightingale Road

  • The boundaries will follow the Roza Canal easterly to the County Line Road.

  • The east boundaries will be the Yakima/Benton County Line from a point beginning at the County Line and Highway 22 (near Byron),

  • continuing westerly along Highway 22 (to near the city of Mabton) to the intersection of Highway 22 and the Reservation Boundary (Division Road), and

  • continuing north to the Yakima River.

  • Then it will follow the river northwest to the Wapato-Donald Road,

  • continuing north along said road to Highway 12, then

  • Highway 12 to Parker Heights Road, and

An area lying southerly of State Route 14 and within T2N, Ranges 13 and 14, east of Klickitat County

oxtongue, hawkweed

Picris hieracioides

All of Region 9

parrotfeather

Myriophyllum aquaticum

All of Region 9

primrose, water

Ludwigia hexapetala

All of Region 9

ragwort, tansy

Senecio jacobaea

All of Region 9

saltcedar

Tamarix ramosissima

Region 9, except Benton and Franklin counties (unless intentionally established prior to 2004)

skeletonweed, rush

Chondrilla juncea

All of Region 9

Franklin County, except T13N, R36E, and T14N, R36E

sowthistle, perennial

Sonchus arvensis ssp. arvensis

All of Region 9

spurge, leafy

Euphorbia esula

All of Region 9

starthistle, yellow

Centaurea solstitialis

Franklin County

Region 9, except Klickitat County

swainsonpea

Sphaerophysa salsula

Franklin County

thistle, musk

Carduus natans

All of Region 9

thistle, plumeless

Carduus acanthoides

All of Region 9

thistle, Scotch

Onopordum acanthium

All of Region 9

toadflax, Damlatian

Linaria dalmatica ssp. dalmatica

Region 9, except those areas lying:

  • within Yakima County

  • west of the Klickitat River and within Klickitat County

watermilfoil, Eurasian

Myriophyllum spicatum

All of Region 9