Purple Loosestrife
Purple loosestrife is a European plant probably introduced to the United States as an ornamental.
Medusahead
Medusahead was brought to the United States from Eurasia.
Leafy Spurge
A native plant of Eurasia, leafy spurge is an aggressive invader of pastures, rangeland, stream banks, and waste areas.
Dyers Woad
Dyers woad was introduced from Europe for production of textile dyes.
Dalmatian Toadflax
Dalmatian toadflax was brought to the United States from Europe, probably for ornamental purposes.
Vipers bugloss
A deeply tap rooted biennial or short-lived perennial that grows 1-3 feet tall.
African Mustard
Rosette leaves are deeply lobed and can reach 12 inches long.
Purple Starthistle
Purple starthistle is a weed in rangeland, grassland, fields, disturbed areas, and along roadsides.
Oxeye Daisy
It is prevalent on poor soils, tolerates cold conditions, and survives drought well.