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Invasive Species Management
Noxious Weeds
Yellow / Orange Weeds
Yellow / Orange Weeds
Yellow / Orange Weeds
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Chinese Clematis
Clematis orientalis
Common Mullein
Verbascum thapsus
Common Tansy
Tanacetum vulgare
Dalmatian Toadflax
Linaria dalmatica
Dyer's Woad
Isatis tinctoria
Leafy Spurge
Euphorbia esula
Moth Mullein
Verbascum blattaria
Myrtle Spurge
Euphorbia myrsinites
Orange Hawkweed
Hieracium aurantiacum
Perennial Sowthistle
Sonchus arvensis
Details coming soon
Puncturevine
Tribulus terrestris
Details coming soon
Scotch Broom
Cytisus scoparius
Details coming soon
St. Johnswort
Hypericum perforatum
Sulfur Cinquefoil
Potentilla recta
Swainsonpea
Sphaerophysa salsula
Details coming soon
Woolly Distaff Thistle
Carthamus lanatus
Details coming soon
Yellow Flag Iris
Iris pseudacorus
Details coming soon
Yellow Starthistle
Centaurea solstitialis
Yellow Toadflax
Linaria vulgaris
Noxious Weed Information
Noxious Weed Identification
List A - Eradication
List B - Eradication
List B - Control
List C - Control
Watch List
Weeds of Concern
Blue / Green Weeds
Pink / Purple Weeds
White Weeds
Yellow / Orange Weeds
Noxious Weed Links
Weed of the Month
Colorado Noxious Weed Awareness Campaign
Citizen Science
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