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Colorado Noxious Weeds (including Watch List), effective June, 2020 <br /> List 8 Species Continued (38) <br /> Common Scientific <br /> Jointed goatgrass (Aegilops cylindrica) <br /> Leafy spurge (Euphorbia esulo) <br /> Mayweed chamomile (Anthemis cotula) <br /> Moth mullein (Verbascum blottaria) <br /> Musk thistle (Carduus nutans) <br /> Oxeye daisy (Leucanthemum vulgare) <br /> Perennial pepperweed (Lepidium latifolium) <br /> Plumeless thistle (Carduus ocanthoides) <br /> Russian knapweed (Rhoponticum repens) <br /> Russian-olive (Elaeognus angustifolio) <br /> Salt cedar (Tamorix. romosissimo) <br /> Salt cedar (T. chinensis) <br /> Scentless chamomile (Tripleurospermum inodorum) <br /> Scotch thistle (Onopordum oconthium) <br /> Scotch thistle (O. tauricum) <br /> Spotted knapweed (Centaurea stoebe L. ssp. micranthos) <br /> Spotted x diffuse knapweed hybrid (Centaurea x psommogeno) <br /> Sulfur cinquefoil (Potentilla recta) <br /> Wild caraway (Carum corvi) <br /> Yellow nutsedge (Cyperus esculentus) <br /> Yellow toadflax (Linaria vulgaris) <br /> Yellow x Dalmatian toadflax hybrid (Linaria vulgaris x L. dalmatica) <br /> List C Species (16) <br /> Common Scientific <br /> Bulbous bluegrass (Poo bulboso) <br /> Chicory (Cichorium intybus) <br /> Common burdock (Arctium minus) <br /> Common mullein (Verbascum thapsus) <br /> Common St. Johnswort (Hypericum perforatum) <br /> Downy brome, cheatgrass (Bromus tectorum) <br /> Field bindweed (Convolvulus arvensis) <br /> Halogeton (Halogeton glomerotus) <br /> Johnsongrass (Sorghum holepense) <br /> Perennial sowthistle (Sonchus orvensis) <br /> Poison hemlock (Conium maculatum) <br /> Puncturevine (Tribulus terrestris) <br /> Quackgrass (Elymus repens) <br /> Redstem filaree (Erodium cicutarium) <br /> Velvetleaf (Abutilon theophrasti) <br /> Wild proso millet (Ponicum miliaceum) <br />