Hoary Cress
This plant originated in Europe. It reproduces by root segments and seed.
A native to southeastern Eurasia, Canada thistle reproduces by seeds and rootstock.
Bermudagrass prefers warmer regions, but it is becoming established in cooler regions as well.
Yellow Toadflax
is an aggressive invader of rangeland, roadsides, field edges, and waste areas.
Squarrose knapweed is a native plant of the eastern Mediterranean area.
Originally found in Eurasia, spotted knapweed infests rangeland, pastures, roadsides, or any disturbed soils.
Native to Eurasia, rush skeletonweed is found in rangeland, cropland, pastures, wasteland, disturbed areas, sagebrush, and along roadsides.
Purple loosestrife is a European plant probably introduced to the United States as an ornamental.