Noxious weed list
Click on a common name to view image and detailed description.
Common name / scientific name
Absinth wormwood – artemesia absinthium
Black henbane – hyoscyamus niger
Bouncingbet – saponaria officinalis
Bull thistle – cirsium vulgare
Canada thistle – cirsium arvense
Chicory – cichorium intybus
Chinese clematis – clematis orientalis
Common burdock – arctium minus
Common tansy – tanacetum vulgare
Common teasel – dipsacus fullonum
Corn chamomile – anthemis arvensis
Curly dock – rumex crispus
Cutleaf teasel – dipsacus laciniatus
Cypress spurge – euphorbia cyparissias
Dalmatian toadflax – linaria dalmatica
Dame’s rocket – hesperis matronalis
Diffuse knapweed – centaurea diffusa
Hoary cress – lepidium draba
Houndstongue – cynoglossum officinale
Jointed goatgrass – aegilops cylindrica
Leafy spurge – euphorbia esula
Mayweed chamomile – anthemis cotula
Meadow knapweed – centaurea x moncktonii
Mediterranean sage – salvia aethiopsis
Musk thistle – carduus nutans
Myrtle spurge – euphorbia myrsinites
Oxeye daisy – leucanthemum vulgare
Perennial pepperweed – lepidium latifolium
Plumeless thistle – carduus acanthoides
Poison hemlock – conium maculatum
Purple loosestrife – lythrum salicaria
Russian knapweed – acroptilon repens
Russian olive – elaeagnus angustifolia
Salt cedar – tamarix parviflora, tamarix ramosissima
Scentless chamomile – tripleurospermum perforatum
Scotch thistle – onopordum acanthium
Spotted knapweed – centaurea maculosa
Sulfur cinquefoil – potentilla recta
Yellow starthistle – centaurea solstitalis
Yellow toadflax – linaria vulgaris
As of 2020, all Colorado state-listed noxious weeds will be eligible for cost-share reimbursement. This includes A, B, C and Watch List species. Please note that all applications will be reviewed and reimbursements will be made at the discretion of the Cost Share Review Committee.
Colorado Weed Management Association
Noxious Weeds of Colorado is a convenient guide separated into lists and including pictures and easily recognizable characteristics aiding in the identification of each noxious weed.
13th edition – 2018 (220 pages)
Stop by our office to pick up a copy. We are located in Rifle at 195 W. 14th Street, Building D, Suite 310.