Colorado Noxious Weeds

Plant Industry Division. 2023. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act. Colorado Department of Agriculture.

https://drive.google.com/file/d/1Kv7vzdvkjs9ud9gsG7o4AqXA2JjYlbxO/view

Common Name Scientific Name
giant salvinia Salvinia molesta D. S. Mitchell
Canada thistle Cirsium arvense (L.) Scop.
tree-of-heaven Ailanthus altissima (P. Mill.) Swingle
giant reed Arundo donax L.
musk thistle, nodding thistle Carduus nutans L.
spotted knapweed Centaurea stoebe ssp. micranthos (Gugler) Hayek
yellow nutsedge Cyperus esculentus L.
common teasel Dipsacus fullonum L.
Russian olive Elaeagnus angustifolia L.
hydrilla Hydrilla verticillata (L. f.) Royle
purple loosestrife Lythrum salicaria L.
parrotfeather Myriophyllum aquaticum (Vell.) Verdc.
Eurasian watermilfoil Myriophyllum spicatum L.
johnsongrass Sorghum halepense (L.) Pers.
common mullein Verbascum thapsus L.
cypress spurge Euphorbia cyparissias L.
bull thistle Cirsium vulgare (Savi) Ten.
spiny plumeless thistle, plumeless thistle Carduus acanthoides L.
Siberian elm Ulmus pumila L.
yellow toadflax Linaria vulgaris P. Mill.
puncturevine Tribulus terrestris L.
field bindweed Convolvulus arvensis L.
meadow knapweed Centaurea x moncktonii C. E. Britton[C. jacea X C. nigra]
Mediterranean sage Salvia aethiopis L.
poison hemlock Conium maculatum L.
squarrose knapweed Centaurea virgata Lam.
Russian knapweed Rhaponticum repens (L.) Hidalgo
yellow starthistle Centaurea solstitialis L.
rush skeletonweed Chondrilla juncea L.
common St. Johnswort Hypericum perforatum L.
common crupina Crupina vulgaris Cass.
sulfur cinquefoil Potentilla recta L.
Scotch thistle Onopordum acanthium L.
diffuse knapweed Centaurea diffusa Lam.
broomleaf toadflax Linaria genistifolia (L.) P. Mill.
Dyer's woad Isatis tinctoria L.
velvetleaf Abutilon theophrasti Medik
jointed goatgrass Aegilops cylindrica Host
camelthorn Alhagi maurorum Medik
stinking chamomile Anthemis cotula L
absinth wormwood Artemisia absinthium L.
common burdock, lesser burdock Arctium minus Bernh.
cheatgrass, downy brome Bromus tectorum L.
flowering rush Butomus umbellatus L.
common caraway Carum carvi L.
hoary cress Lepidium draba (L.) Desv
chicory Cichorium intybus L.
oriental virginsbower Clematis orientalis L.
houndstongue Cynoglossum officinale L.
cutleaf teasel Dipsacus laciniatus L.
quackgrass Elymus repens (L.) Gould
hairy willowherb Epilobium hirsutum L.
redstem filaree Erodium cicutarium (L.) L'Hér. ex Ait.
myrtle spurge Euphorbia myrsinites L
halogeton, saltlover Halogeton glomeratus (Bieb.) C.A. Mey.
dames rocket Hesperis matronalis L.
black henbane Hyoscyamus niger L.
pale yellow iris, yellow flag iris Iris pseudacorus L.
perennial pepperweed Lepidium latifolium L.
oxeye daisy Leucanthemum vulgare Lam.
Dalmatian toadflax Linaria dalmatica (L.) P. Mill.
bull cottonthistle Onopordum tauricum Willd.
wild-proso millet Panicum miliaceum L.
African rue Peganum harmala L.
bulbous bluegrass Poa bulbosa L.
bouncingbet Saponaria officinalis L.
perennial sowthistle Sonchus arvensis L.
medusahead Taeniatherum caput-medusae (L.) Nevski
saltcedar Tamarix ramosissima Ledeb.
common tansy Tanacetum vulgare L.
moth mullein Verbascum blattaria L.
ventenata Ventenata dubia (Leers) Coss. & Durieu
fivestamen tamarisk Tamarix chinensis Lour.
Japanese knotweed Reynoutria japonica Sieb. & Zucc.
giant knotweed Reynoutria sachalinensis F. Schmidt ex Maxim.
elongated mustard Brassica elongata Ehrh.
scentless chamomile Tripleurospermum inodorum (L.) Sch. Bip.
Bohemian knotweed, Hybrid Japanese knotweed Reynoutria x bohemica Chrtek & Chrtková
tansy ragwort Jacobaea vulgaris Gaertn.
leafy spurge Euphorbia virgata Waldst. & Kit.
orange hawkweed Pilosella aurantiaca (L.) F. W. Schultz & Sch. Bip.
hybrid knapweed Centaurea x psammogena G. Gáyer
hybrid toadflax Linaria dalmatica x vulgaris