Leafy Spurge (Euphorbia esula)
Leafy Spurge (Euphorbia esula), Spurge Family (Euphorbiaceae) is an introduced species, classified as a B-list noxious weed in Colorado. It is common in disturbed areas, fields, grasslands, on floodplains, and along roadsides and streams from the plains to the lower...
Canada Thistle (Cirsium arvense)
Canada Thistle (Cirsium arvense), Aster Family (Asteraceae), is an introduced species, classified as a B-list noxious weed in Colorado. It is common and widespread in disturbed places, along roadsides, and in fields and meadows, from the plains to the montane on the...
Wax Currant (Ribes cereum)
Wax Currant (Ribes cereum), Gooseberry Family (Grossulariaceae), is a native shrub common in rocky places and dry hillsides, sometimes in pinyon-juniper or sagebrush, from the plains to the alpine on the eastern and western slopes. Blooms from April through August....