Noxious Weed Images

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ABSINTH WORMWOOD
(Artemisia absinthium)

Absinth Wormwood Absinth wormwood
AFRICAN RUE
(Peganum harmala)

African Rue African Rue
BLACK HENBANE
(Hyoscyamus niger)

Black henbane Black henbane
BOUNCING BET
(Saponaria officinalis)

Bouncing bet Bouncing bet

BULL THISTLE
(Cirsium vulgare)

Bull thistle Bull thistle

CAMELTHORN
(Alhagi pseudalhagi)

Camelthorn Camelthorn
CANADA THISTLE
(Cirsium arvense)

Canada thistle Canada thistle
CHICORY
(Cichorium intybus)

Chicory Chicory
CHINESE CLEMATIS
(Clematis orientalis)

Chinese clematis Chinese clematis
COMMON BURDOCK
(Arctium minus)

Common burdock Common burdock
Common Crupina
(Crupina vulgaris)
not known to occur in Colorado

Common crupina Common crupina
COMMON MULLEIN
(Verbascum thapsus)
 

Common mullein Common mullein
COMMON ST. JOHNSWORT
(Hypericum perforatum)

Common St. johnswort Common St. johnswort
COMMON TANSY
(Tanacetum vulgare)

Common tansy Common tansy
COMMON TEASEL
(Dipsacus fullonum)

Common teasel Common teasel
CORN CHAMOMILE
(Anthemis arvensis)

Corn chamomile Corn chamomile 
CUTLEAF TEASEL
(Dipsacus spp.)

Cutleaf teasel Cutleaf teasel
CYPRESS SPURGE
(Euphorbia cyparissias)

Cypress spurge Cypress spurge
DALMATIAN TOADFLAX
(Linaria dalmatica) broadleaf & (Linaria genistifoila) narrowleaf

Dalmatian toadflax Dalmatian toadflax
DAME'S ROCKET
(Hesperis matronalis)


Dames rocket Dames rocket
DIFFUSE KNAPWEED
(Centaurea diffusa)

Diffuse knapweed Diffuse knapweed
DYER'S WOAD
(Isatis tinctoria)

Dyers woad Dyers woad
ELONGATED MUSTARD
(Brassica elongata)

Elongated Mustard Elongated Mustard
EURASIAN WATERMILFOIL
(Myriophyllum spicatum)

Eurasian watermilfoil Eurasian watermilfoil
FIELD BINDWEED
(Convolvulus arvensis)

Field bindweed Field bindweed
GARLIC MUSTARD
(Alliaria petiolata)

Garlic mustard Garlic mustard
GIANT REED
(Arundo donax)


Giant reed Giant reed
GIANT SALVINIA
(Salvinia molesta)
not known to occur in Colorado

Giant salvinia Giant salvinia
HALOGETON
(Halogeton glomeratus)

Halogeton © Clinton Shock Halogeton © Bonnie Million, NPS
HOARY CRESS
(Cardaria draba)

Hoary cress Hoary cress
HOUNDSTONGUE
(Cynoglossum officinate)


Houndstongue Houndstongue
HYDRILLA
(Hydrilla verticillata)
Not known to occur in Colorado

Hydrilla Hydrilla
JOINTED GOATGRASS
(Aegilops cylindrica)


 Jointed goatgrass Jointed goatgrass
Japanese, Giant, and Bohemian knotweed
(Polygonum cuspidatum), (Polygonum sachalinense), (Polygonum x bohemicum)

Knotweed Knotweed
KOCHIA
(Kochia scoparia)

Kochia Kochia
LEAFY SPURGE
(Euphorbia esula)

Leafy spurge Leafy spurge
MAYWEED CHAMOMILE
(Anthemis cotula)

Mayweed chamomile Mayweed chamomile
MEADOW KNAPWEED
(Centaurea pratensis)

Meadow knapweed Meadow knapweed
MEDITERRANEAN SAGE
(Salvia aethiopis)


Mediterranean sage Mediterranean sage
MEDUSAHEAD RYE
(Taeniatherum caput-medusae)
Not known to occur in Colorado

Medusahead rye Medusahead rye
MOTH MULLEIN
(Verbascum blattaria)

Moth mullein Moth mullein
MUSK THISTLE
(Carduus nutans)

Musk thistle Musk thistle
MYRTLE SPURGE
(Euphorbia myrsinites)

Myrtle spurge Myrtle spurge
ORANGE HAWKWEED
(Hieracium aurantiacum)

Orange hawkweed Orange hawkweed
OXEYE DAISY
(Chrysanthemum leucanthemum)

Oxeye daisy Oxeye daisy
PERENNIAL PEPPERWEED
(Lepidium latifolium)

Perennial pepperweed Perennial pepperweed
PLUMLESS THISTLE
(Carduus acanthoides)

Plumless thistle Plumless thistle 006
POISON HEMLOCK
(Conium maculatum)

Poison hemlock Poison hemlock
PUNCTUREVINE
(Tribulus terrestris)

Puncturevine © Eric Coombs @ OR Dept of Ag Puncturevine
PURPLE LOOSESTRIFE
(Lythrum salicaria)

Purple loosestrife Purple loosestrife
QUACKGRASS
(Elytrigia repens)

Quackgrass Quackgrass
REDSTEM FILAREE
(Erodium cicutarium)

Redstem filaree Redstem filaree
RUSH SKELETONWEED
(Chondrilla juncea)

Rush skeletonweed Rush skeletonweed
RUSSIAN KNAPWEED
(Acroptilon repens)

Russian knapweed Russian knapweed
RUSSIAN OLIVE
(Elaeagnus angustifolia)

Russian olive Russian olive
SALTCEDAR (TAMARIX)
(Tamarix ramosissima)

Saltcedar Saltcedar
SCENTLESS CHAMOMILE
(Matricaria perforata)

Scentless chamomile Scentless chamomile
SCOTCH THISTLE
(Onopordum acanthium)

Scotch thistle Scotch thistle
SPOTTED KNAPWEED
(Centaurea maculosa)

Spotted knapweed Spotted knapweed
SPURRED ANODA
(Anoda cristata)

Spurred anoda Spurred anoda
SQUARROSE KNAPWEED
(Centaurea virgata)
Not known to occur in Colorado

Squarrose knapweed Squarrose knapweed
SULFUR CINQUEFOIL
(Potentilla recta)


Sulfur cinquefoil Sulfur cinquefoil
TANSY RAGWORT
(Senecio jacobaea)
Not known to occur in Colorado

Tansy ragwort Tansy ragwort
VENICE MALLOW
(Hibiscus trionum)


Venice mallow Venice mallow
WILD CARAWAY
(Carum carvi)

Wild caraway Wild caraway
YELLOW NUTSEDGE
(Cyperus esculentus)

Yellow nutsedge Yellow nutsedge
YELLOW STARTHISTLE
(Centaurea solstitialis)

Yellow starthistle Yellow starthistle
YELLOW TOADFLAX
(Linaria vulgaris)

Yellow toadflax Yellow toadflax