2016 KLICKITAT COUNTY

NOXIOUS WEED LIST

Links in the tables below are to the

Washington State Noxious Weed Control Board web site.

Class A Weeds

CLICK ABOVE LINK FOR PICTURES OF CLASS A WEEDS.

The State of Washington through RCW 17.10 has listed the following Class A weeds for eradication statewide. Class A consists of those noxious weeds not native to state that are of limited distribution or are unrecorded in the state and that pose a serious threat to the state. (RCW 17.10.010.2.(a)) Common Name: Scientific Name

broom, French Genista monspessulana

broom, Spanish Spartium junceum common crupina Crupina vulgaris

cordgrass, common Spartina anglica

cordgrass, dense flower Spartina densiflora

cordgrass, salt meadow Spartina patens

cordgrass, smooth Spartina alterniflora dyers woad Isatis tinctoria eggleaf spurge * Euphorbia oblongata false brome Brachypodium sylvaticum floating primrose-willow Ludwigia peploides flowering rush Butomus umbellatus garlic mustard Alliaria petiolata giant hogweed * Heracleum mantegazzianum

goatsrue Galega officinalis

hydrilla Hydrilla verticillata johnsongrass * Sorghum halepense knapweed, bighead * Centaurea macrocephala knapweed, Vochin * Centaurea nigrescens

kudzu Pueraria montana var. lobata meadow clary Salvia pratensis oriental clematis Clematis orientalis purple starthistle Centaurea calcitrapa Ravenna grass Saccharum ravennae reed sweetgrass Glyceria maxima ricefield bulrush Schoenoplectus mucronatus

sage, clary Salvia sclarea sage, Mediterranean * Salvia aethiopis silverleaf nightshade Solanum elaeagnifolium spurge flax Thymelaea passerina Syrian bean-caper Zygophyllum fabago Texas blueweed Helianthus ciliaris

thistle, Italian Carduus pycnocephalus

thistle, milk Silybum marianum

thistle, slenderflower Carduus tenuiflorus variable-leaf milfoil Myriophyllum heterophyllum wild four o'clock Mirabilis nyctaginea Class B-Designate Weeds

CLICK ABOVE LINK FOR PICTURES OF CLASS B WEEDS.

The State of Washington through RCW 17.10 has listed the following Class B weeds as designated for control in Klickitat County. Class B consists of those noxious weeds not native to the state that are of limited distribution or are unrecorded in a region of the state and that pose a serious threat to that region. (RCW 17.10.010.2(b)) Common Name Scientific Name

blueweed Echium vulgare Brazilian elodea Egeria densa

bugloss, annual Anchusa arvensis

bugloss, common Anchusa officinalis

camelthorn Alhagi maurorum common fennel Foeniculum vulgare

common reed, nonnative Phragmites australis

fanwort Cabomba caroliniana

gorse Ulex europaeus

grass-leaved arrowhead Sagittaria graminea hawkweed oxtongue Picris hieracioides

hawkweed, orange Hieracium aurantiacum herb-Robert * Geranium robertianum

knapweed, black Centaurea nigra

knapweed, brown Centaurea jacea knotweed, Bohemian * Polygonuym x bohemicum knotweed, giant * Polygonum sachalinense

knotweed, Himalayan Polygonum polystachyum knotweed, Japanese * Polygonum cuspidatum

loosestrife, garden Lysimachia vulgaris loosestrife, purple * Lythrum salicaria

loosestrife, wand Lythrum virgatum Nonnative hawkweed species and hybrids of WALL Hieracium subgenus, Hieracium

subgenus

parrotfeather Myriophyllum aquaticum policeman’s helmet Impatiens glandulifera saltcedar * Tamarix ramosissima

(unless intentionally planted prior to 2004) Shiny geranium Geranium lucidum spurge laurel Daphne laureola spurge, leafy * Euphorbia esula spurge, myrtle * Euphorbia myrsinites L

thistle, musk Carduus nutans

thistle, plumeless Carduus acanthoides thistle, Scotch * Onopordum acanthium

velvetleaf Abutilon theophrasti water primrose Ludwigia hexapetala white bryony Bryonia alba wild chervil Anthriscus sylvestris yellow archangel * Lamiastrum galeobdolon yellow floating heart Nymphoides peltata Class B Weeds

CLICK ABOVE LINK FOR PICTURES OF CLASS B WEEDS.

The Klickitat County Noxious Weed Control Board through RCW 17.10 has listed the following Class B weeds, not designated by the State, to be on the county noxious weed list. Class B consists of those noxious weeds not native to the state that are of limited distribution or are unrecorded in a region of the state and that pose a serious threat to that region. (RCW 17.10.010.2(b)) Common Name Scientific Name butterfly bush * Buddleia davidii Dalmatian toadflax * Linaria dalmatica ssp. dalmatica Eurasian watermilfoil * Myriophyllum spicatum hairy willow-herb * Epilobium hirsutum hoary alyssum * Berteroa incana houndstongue * Cynoglossum officinale indigobush * Amorpha fruticosa knapweed, diffuse * Centaurea diffusa knapweed, meadow * Centaurea x moncktonii knapweed, Russian * Acroptilon repens knapweed, spotted * Centaurea stoebe kochia * Kochia scoparia lesser celandine Ficaria verna Nonnative hawkweed species and hybrids of MEADOW Hieracium subgenus, Pilosella

subgenus perennial pepperweed * Lepidium latifolium poison hemlock * Conium maculatum puncturevine * Tribulus terrestris rush skeletonweed * Chondrilla juncea Scotch broom * Cytisus scoparius sulfur cinquefoil * Potentilla recta tansy ragwort * Senecio jacobaea yellow nutsedge* Cyperus esculentus yellow starthistle * Centaurea solstitialis Class C Weeds

CLICK ABOVE LINK FOR PICTURES OF CLASS C WEEDS.

The Klickitat County Noxious Weed Control Board through RCW 17.10 has listed the following Class C weeds to be designated for control on the county noxious weed list. Class C consists of any other noxious weeds. (RCW 17.10.010.2(c)) Common Name Scientific Name Austrian fieldcress * Rorippa austriaca

black henbane Hyoscyamus niger buffalobur * Solanum rostratum hairy whitetop * Lepidium appelianum hoary cress * Lepidium draba jubata grass Cortaderia jubata Italian arum Arum italicum longspine sandbur * Cenchrus longispinus

Nonnative cattails Typha species pampas grass Cordaderia selloana spikeweed * Centromadia pungens spiny cocklebur * Xanthium spinosum Swainsonpea * Sphaerophysa salsula thistle, Canada * Cirsium arvense yellow flag iris * Iris pseudacorus Weeds of Local Concern

These are additional non-native, invasive plant species that are of concern in Klickitat County. The Board encourages and recommends control and containment of existing populations, but control is not required. common St. Johnswort * Hypericum perforatum jointed goatgrass * Aegilops cylindrica wild carrot * Daucus carota *indicates known population in Klickitat County