ODA Plant Division, Noxious Weed Control Oregon State Noxious Weed List

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ODA Plant Division, Noxious Weed Control

Department

Oregon State Noxious Weed List


A List
B list

A List

"A" Designated weeds as determined by the Oregon Department of Agriculture

Common Name		Scientific Name
African rue		Peganum harmala
Camelthorn		Alhagi pseudalhagi
Coltsfoot		Tussilago farfara
Cordgrass
Common		Spartina anglica
Dense-flowered		Spartina densiflora
Saltmeadow		Spartina patens
Smooth		Spartina alterniflora
European water chestnut		Trapa natans
Giant hogweed		Heracleum mantegazzianum
Goatgrass
Barbed		Aegilops triuncialis
Ovate		Aegilops ovata
Goatsrue		Galega officinalis
Hawkweed
King-devil		Hieracium piloselloides
Meadow		Hieracium pratense
Mouse-ear		Hieracium pilosella
Orange		Hieracium aurantiacum
Yellow		Hieracium floribundum
Hydrilla		Hydrilla verticillata
Kudzu		Pueraria lobata
Matgrass		Nardus stricta
Oblong spurge		Euphorbia oblongata
Paterson's curse		Echium plantagineum
Purple nutsedge		Cyperus rotundus
Silverleaf nightshade		Solanum elaeagnifolium
Skeletonleaf bursage		Ambrosia tomentosa
Squarrose knapweed		Centaurea virgata
Starthistle
Iberian		Centaurea iberica
Purple		Centaurea calcitrapa
Syrian bean-caper		Zygophyllum fabago
Texas blueweed		Helianthus ciliaris
Thistle
Plumeless		Carduus acanthoides
Smooth distaff		Carthamus baeticus
Taurian		Onopordum tauricum
Woolly distaff		Carthamus lanatus
White bryonia		Bryonia alba
Yellow floating heart		Nymphoides peltata

B list

"B" designated weeds as determined by the Oregon Department of Agriculture
(*indicates targeted for biological control)

Common Name	Scientific Name
Biddy-biddy	Acaena novae-zelandiae
Broom
French*	Genista monspessulana
Portuguese	Cytisus striatus
Scotch*	Cytisus scoparius
Spanish	Spartium junceum
Buffalobur	Solanum rostratum
Butterfly bush	Buddleja davidii (B.variabilis)
Common bugloss	Anchusa officinalis
Common crupina (bearded creeper)	Crupina vulgaris
Creeping yellow cress	Rorippa sylvestris
Cutleaf teasel	Dipsacus laciniatus
Dodder	Cuscuta spp.
Dyers woad	Isatis tinctoria
English ivy	Hedera helix (H. hibernica)
Eurasian watermilfoil	Myriophyllum spicatum
False brome	Brachypodium sylvaticum
Field bindweed*	Convolvulus arvensis
Garlic mustard	Alliaria petiolata
Giant horsetail	Equisetum telmateia
Gorse*	Ulex europaeus
Halogeton	Halogeton glomeratus
Himalayan blackberry	Rubus armeniacus (R. procerus, R. discolor)
Houndstongue	Cynoglossum officinale
Johnsongrass	Sorghum halepense
Jointed goatgrass	Aegilops cylindrical
Jubata grass	Cortaderia jubata
Knapweeds
Diffuse*	Centaurea diffusa
Meadow*	Centaurea pratensis (C. jacea x C. nigra)
Russian*	Acroptilon repens
Spotted*	Centaurea stoebe (C. maculosa)
Knotweeds
Giant*	Fallopia sachalinense (Polyganum)
Himalayan*	Fallopia polystachyum (Polyganum)
Japanese (fleece flower)*	Fallopia japonica (Polyganum cuspidatum)
Kochia	Kochia scoparia
Lesser celandine	Ranunculus ficaria
Mediterranean sage*	Salvia aethiopis
Medusahead rye	Taeniatherum caput-medusae
Old man's beard	Clematis vitalba
Parrots feather	Myriophyllum aquaticum
Perennial peavine	Lathyrus latifolius
Perennial pepperweed	Lepidium latifolium
Poison hemlock	Conium maculatum
Policeman's helmet	Impatiens glandulifera
Puncturevine*	Tribulus terrestris
Purple loosestrife*	Lythrum salicaria
Quackgrass	Agropyron repens
Ragweed	Ambrosia artemisiifolia
Rush skeletonweed*	Chondrilla juncea
Saltcedar*	Tamarix ramosissima
Small broomrape	Orobanche minor
South American waterweed	Egeria densa (Elodea)
Spikeweed	Memizonia pungens
Spiny cocklebur	Xanthium spinosum
Spurge laurel	Daphne laureola
Spurge
Leafy*	Euphorbia esula
Myrtle	Euphorbia myrsinites
St. Johnswort (Klamath weed) *	Hypericum perforatum
Sulfur cinquefoil	Potentilla recta
Swainsonpea (Austrian peaweed)	Sphaerophysa salsula
Tansy ragwort*	Senecio jacobaea
Thistles
Bull*	Cirsium vulgare
Canada*	Cirsium arvense
Italian*	Carduus pycnocephalus
Milk*	Silybum marianum
Musk*	Carduus nutans
Scotch	Onopordum acanthium
Slender-flowered*	Carduus tenuiflorus
Toadflax
Dalmatian*	Linaria dalmatica (L. genista)
Yellow*	Linaria vulgaris
Velvetleaf	Abutilon theophrasti
Whitetop
Hairy	Lepidium pubescens (Cardaria)
Lens-podded	Lepidium chalepensis (Cardaria)
Hoary cress	Lepidium draba (Cardaria)
Yellow flag iris	Iris pseudacorus
Yellow nutsedge	Cyperus esculentus
Yellow starthistle*	Centaurea solstitialis

Page updated: April 01, 2008

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