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Region 7 Class B Weed Designates

Region 7  contains all lands lying within the boundaries of:

  • Lincoln and Whitman counties
  • Spokane County and south of the Spokane River
  • Ranges 31E, 32E, 33E, 34E, 35E, 36E, 37E, and 38E of Adams County
Common name Scientific name Designated for control in:
alyssum, hoary Berteroa incana Adams and Whitman counties of Region 7
arrowhead, grass-leaved Sagittaria graminea All of Region 7
blackgrass Alopecurus myosuroides Adams County only
blueweed Echium vulgare Region 7, except for an area starting:
  • at the Stevens County line on SR 291 south to the SR 291 bridge over the Little Spokane River, then
  • upstream along the Little Spokane River to the first Rutter Parkway Bridge, then
  • south along the Rutter Parkway to the intersection of Rutter Parkway and Indian Trail Road, then
  • southerly along Indian Trail Road to a point three miles south (on section line between sections 22 and 27, T-26N, R-42E), then
  • due west to a point intersecting the line between Ranges 41 and 42, then
  • north along this line to a point 1/4 mile south of Charles Road, then
  • northwesterly parallel to Charles Road to a point 1/4 miles south of the intersection of Charles Road and West Shore Road, then
  • northerly along West Shore Road to the Spokane River (Long Lake), then
  • southeasterly along the Spokane River to the point of beginning
broom, Scotch Cytisus scoparius All of Region 7
bryony, white Byronia alba Region 7, except Whitman County
bugloss, common Anchusa officinalis Lincoln, Adams, and Whitman counties only
bugloss, annual Anchusa arvensis Lincoln and Adams counties

Whitman County except Ranges 43 - 46 East of Townships 16 - 20 North
camelthorn Alhagi maurorum

All of Region 7

carrot, wild Daucus carota Region 7 (except where intentionally cultivated)
catsear, common Hypochaeris radicata All of Region 7
chervil, wild Anthriscus sylvestris All of Region 7
cinquefoil, sulfur Potentilla recta Region 7, except for Spokane County
cordgrass, smooth Spartina alterniflora All of Region 7
cordgrass, common Spartina anglica All of Region 7
daisy, oxeye Leucanthemum vulgare All of Region 7
elodea, Brazilian Egeria densa All of Region 7
fanwort Cabomba caroliniana All of Region 7
fieldcress, Austrian Rorippa austriaca Regions 7 and 10, except within the Palouse River Canyon from Big Palouse Falls to the Snake River
floating heart, yellow Nymphoides peltata All of Region 7
gorse Ulex europaeus All of Region 7
hawkweed, mouseear Hieracium pilosella All of Region 7
hawkweed, orange Hieracium aurantiacum Lincoln and Adams counties only
hawkweed, polar Hieracium atratum All of Region 7
hawkweed queen-devil Hieracium glomeratum All of Region 7
hawkweed, smooth Hieracium laevigatum All of Region 7
hawkweed, yellow Hieracium caespitosum All of Region 7
hedgeparsley Torilis arvensis All of Region 7
helmet, policeman's Impatiens gladulifera All of Region 7
herb-Robert Geranium robertianum All of Region 7
indigobush Amorpha fruticosa Regions 7 and 10, except within 200 feet of the Snake River from Central Ferry downstream
knapweed, black Centaurea nigra All of Region 7
knapweed, brown Centaurea jacea All of Region 7
knapweed, diffuse Centaurea diffusa Adams County, except those areas within:
  • T15N, R36E, Section 36
  • T15N, R37E, Sections 22, 26, 27, 28, 31, 32, 33, and 34
  • T15N, R37E, western half of Sections 23, 24, and 25
  • T15Nm R38E, Sections 2, 10, 11, 14, 15, 19, and 20
  • T16N, R38E, Sections 34 and 35
  • T17N, R37E, Sections 5 and 6
knapweed, meadow Centaurea jacea x nigra All of Region 7
knapweed, Russian Acroptilon repens All of Region 7
knapweed, spotted Centaurea biebersteinii Adams and Whitman counties only
lepyrodiclis Lepyrodiclis holosteoides Region 7, except an area within Whitman County:
  • east of the Pullman-Wawawai Road from Wawawai to Pullman and
  • south of State Highway 270 from Pullman to Moscow, Idaho
loosestrife, garden Lysimachia vulgaris All of Region 7
loosestrife, purple Lythrum salicaria All of Region 7
loosestrife, wand Lythrum virgatum  All of Region 7
nutsedge, yellow Cyperus esculentus All of Region 7
oxtongue, hawkweed Picris hieracioides All of Region 7
parrotfeather Myriophyllum aquaticum All of Region 7
pepperweed, perennial Lepidium latifolium All of Region 7
primrose, water Ludwigia hexapetala All of Region 7
puncturevine Tribulus terrestris Adams County
ragwort, tansy Senecio jacobaea All of Region 7
saltcedar Tamarix ramosissima All of Region 7, unless intentionally established prior to 2004
sandbur, longspine Cenchrus longispinus All of Region 7
skeletonweed, rush Chondrilla juncea Adams County, except those areas lying:
  • east of a line running north from Franklin County along the western boundary of Range 36 East to State Highway 26, then
  • north on Sage Road until it intersects Lee Road, then
  • due north until intersection with Providence Road , then
  • east to State Highway 261, then
  • north along State Highway 261 to its intersection with Interstate 90, henceforth
  • on a due north line to intersection with Bauman Road, then
  • north along Bauman Road to its terminus, then
  • due north to the Lincoln County line

Whitman County lying in:

  • Ranges 43-46, East of Townships 15-20 North
  • T14N, Ranges 44-46 East
  • T13N, Ranges 45 and 46 East
sowthistle, perennial Sonchus arvensis ssp. arvensis All of Region 7
spurge, leafy Euphorbia esula Region 7, except

In Lincoln County:

  • T27N, R37E, Sections 34,35,36
  • T27N, R38E, Sections 31, 32, 33
  • T26N, R37E, Sections 1,2,3, 10-16, 26
  • T26N, R38E, Sections 5-8

In Spokane County:

  • T24N, R43E, Section 12, Qtr. Section 3, Parcel No. 9068
starthistle, yellow Centaurea solstitialis Region 7, except those areas within Whitman County:
  • lying south of State Highway 26 from the Adams County line to Colfax, and
  • south of State Highway 195 from Colfax to Pullman, and
  • south of State Highway 270 from Pullman to the Idaho border
swainsonpea Sphaerophysa salsula All of Region 7
thistle, musk Carduus natans All of Region 7
thistle, plumeless Carduus acanthoides All of Region 7
thistle, Scotch Onopordum acanthium Region 7, except those areas within Whitman County:
  • lying south of State Highway 26 from the Adams County line to Colfax, and
  • south of State Highway 195 from Colfax to Pullman, and
  • south of State Highway 270 from Pullman to the Idaho border
toadflax, Damlatian Linaria dalmatica ssp. dalmatica Lincoln and Adams Counties

The western two miles of Spokane County of Region 7
watermilfoil, Eurasian Myriophyllum spicatum Region 7, except Spokane County