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Dowe Flats Quarry Noxious Weed Management Plan <br />Colorado Noxious Weed List <br />Common Name <br />Scientific Name <br />CDA <br />Mandate <br />Boulder <br />County <br />Mandate <br />Known in <br />Boulder <br />Coun <br />Present on <br />Dowe Flats <br />Quarry* <br />Biololzry <br />List A S ies: <br />African rue <br />Pe anum harmala <br />Yes <br />Yes <br />Perennial <br />Bohemian knotweed <br />Polygonum xbohenticuni <br />Yes <br />Yes <br />Perennial <br />Camelthom <br />Alha i pseudalhagi <br />Yes <br />Yes <br />Perennial <br />Common cru ina <br />Cru ina vulgaris <br />Yes <br />Yes <br />Winter Annual <br />Cypress spurge <br />Eu horbia cy arissias <br />Yes <br />Yes <br />Yes <br />Perennial <br />Dyer's woad <br />Isatis tinctoria <br />Yes <br />Yes <br />Yes <br />Perennial <br />Elongated mustard <br />Brassica elon ata <br />Yes <br />Yes <br />Perennial <br />Giant knotweed <br />Polygonum sachalinense <br />Yes <br />Yes <br />Perennial <br />Giant reed <br />Arundo donax <br />Yes <br />Yes <br />Perennial <br />Giant salvinia <br />Salvinia molesta <br />Yes <br />Yes <br />_ <br />Annual/Perennial <br />H drilla <br />Hvdrilla verlicillata <br />Yes <br />Yes <br />Perennial <br />Japanese knotweed <br />Polygonum cars idatum <br />Yes <br />Yes <br />Perennial <br />Meadow kna weed <br />Centaurea pratensis <br />Yes <br />Yes <br />Perennial <br />Mediterranean sae <br />Salvia aethio is <br />Yes <br />Yes <br />Yes <br />Biennial <br />Medusahead <br />Taeniatherunt caput -medusae <br />Yes <br />Yes <br />Annual <br />Myrtle spurge <br />Eu horbia m rsinites <br />Yes <br />Yes <br />Yes <br />Biennial/Perennial <br />Orange hawkweed <br />Hieracium aurantiacwn <br />Yes <br />Yes <br />Yes <br />Perennial <br />Purple loosestrife <br />Lvthruna salicaria <br />Yes <br />Yes <br />Yes <br />Perennial <br />Rush skeletonweed <br />Chondrilla •uncea <br />Yes <br />Yes <br />Perennial <br />Squarrose kna weed <br />Centaurea vir ata <br />Yes <br />Yes <br />Perennial <br />Tansy ragwort <br />Senecio 'acobaea <br />Yes <br />Yes <br />Perennial <br />Yellow starthistle <br />Centaurea solsntialis <br />Yes <br />Yes <br />Yes <br />Winter Annual <br />List B Species <br />Absinth wormwood <br />Artemisia absinthium <br />Yes <br />Perennial <br />Black henbane <br />Hvoscvannis ni er <br />Yes <br />Annual/Biennial_ <br />Bouncin bet <br />Sa onaria officinalis <br />Perennial <br />Bull thistle <br />Cirsium vid are <br />Yes <br />Yes <br />Yes <br />Biennial <br />Canada thistle <br />Ci sium aivense <br />Yes <br />Yes <br />Yes <br />Perennial <br />Chinese clematis <br />Clematis orientalis <br />Yes <br />Perennial <br />Common tansy <br />Tanacentin vul are <br />Yes <br />Perennial <br />Common teasel <br />Di sacus dlonunt <br />Yes <br />Yes <br />Yes <br />Biennial <br />Corn chamomile <br />Anthemis arvensis <br />Annual <br />Cutleaf teasel <br />Di sacus laciniatus <br />Biennial <br />Dalmatian toadflax <br />Linaria dalmatica/ Linaria genistifolia <br />Yes <br />Yes <br />Yes <br />Perennial <br />Dame's rocket <br />Hes eris naatronalis <br />Biennial/Perennial <br />Diffuse kna weed <br />Centaurea di usa <br />Yes <br />Yes <br />Yes <br />Biennial/Perennial <br />Eurasian watermilfoil <br />M rio hvllum s icatum <br />Yes <br />Perennial <br />Hoary cress <br />Cardaria draba <br />Perennial <br />Houndston ue <br />Cvno lossiina o icinale <br />Yes <br />Yes <br />Biennial <br />Lea sure <br />Eu horbia esula <br />Yes <br />Yes <br />Perennial <br />Ma weed chamomile <br />Anthemis coada <br />Annual <br />Moth mullein <br />6erbascum blattaria <br />Biennial <br />Musk thistle <br />Carduus nutans <br />Yes <br />Yes <br />Yes <br />Yes <br />Biennial <br />Oxeye daisy <br />Chrysanthemum leucanthenium <br />Yes <br />Perennial <br />Perennial pepperweed <br />Le idiunt lati oltuni <br />Perennial <br />Plumeless thistle <br />Carduus acanthoides <br />Yes <br />Biennial <br />uackgrass <br />Elvtri is re ens <br />Perennial <br />Russian kna weed <br />Acro tilon re ens <br />Yes <br />Yes <br />Perennial <br />Russian -olive <br />Elaea nus an usti olia <br />Yes <br />Perennial <br />Salt cedar <br />Tamarix rainosissinta <br />Yes <br />Yes <br />Yes <br />Perennial <br />Scentless chamomile <br />Matricaria perforata <br />Yes <br />Annual <br />Scotch thistle <br />Ono ordunt acanthiwit <br />Yes <br />Yes <br />Yes <br />Biennial <br />Spotted kna weed <br />Centaurea maculosa <br />Yes <br />Yes <br />Yes <br />Biennial <br />Spurred anoda <br />Anoda cristata <br />Annual <br />Sulfur cinquefoil <br />Potentilla tecta <br />Yes <br />Perennial <br />Venice mallow <br />Hibiscus trionwn <br />Annual <br />Wild caraway <br />Carutn caivi <br />Biennial/ Perennial <br />Yellow nutsed e <br />Cv erus escadentus <br />Perennial <br />Yellow toadflax <br />Linaria vulgaris <br />Yes <br />Yes <br />Yes <br />Perennial <br />Jointed goatgrass <br />Ae ilo s cvlindrica <br />Annual <br />List C Species <br />Bulbous bluegrass <br />Poa badbosa <br />Yes <br />Perennial <br />Chicory <br />Cichorium intvbus <br />Yes <br />Biennial/ Perennial <br />Common burdock <br />Arctiiinn minus <br />Yes <br />Biennial <br />Common mullein <br />Verbascunt tha sus <br />Yes <br />Yes <br />Biennial <br />Common St. Johnswort <br />fly ericutn perforatum <br />Yes <br />Perennial <br />Downy brome/Cheatgrass <br />Bromus tectorum <br />Yes <br />Yes <br />Annual <br />Field bindweed <br />Convolvadus arvensis <br />Yes <br />Yes <br />Perennial _ <br />Halogeton <br />Halogeton glomeratus <br />Annual <br />Johnson ass <br />Sorghum /tale ense <br />Yes <br />Perennial <br />Perennial sowthistle <br />Sonchus arvensis <br />Yes <br />Perennial <br />Poison hemlock <br />Conium maculatwn <br />Yes <br />Biennial <br />Puncturevine <br />Tribulus terrestris <br />Yes <br />Annual <br />Redstem filaree <br />Erodium cicutartuni <br />Yes <br />Annual/Biennial <br />Velvetleaf <br />4butilon theo hrosti <br />Yes <br />Annual <br />Wild proso millet <br />Panicwn niiliaceunt <br />Yes <br />Annual <br />* Based on August 19, 2015 observation <br />Habitat Management, Inc. 12 September 2015 <br />