Tolerant of wide range of conditions Musk Thistle Southern Europe and western Asia NA Disturbed sites along roads, fields, pastures spreading into sagebrush, pinyon juniper and mountain brush communities. Very adaptable and difficult to control Russian Thistle Eurasia up to 8,500 Wide variety of habitats. Dry plains, cultivated fields, waste places, roadsides. Adapted to disturbed land Salt Cedar Eurasia and Africa - introduced as an ornamental shrub in early 1800s NA Disturbed and undisturbed streams, waterways, bottomlands, banks, and drainage washes. Also moist rangelands and patures.
Seedlings require saturated soils.
Tolerates highly saline soils and alkali conditions. NA Includes habitats dominated by ponderosa pine and Douglas-fir as well as foothill prairie habitats. Found in light, porous fertile, well-drained and often calcareous soils in warm areas. 3,500 - 8,500 Waste places, cultivated fields, pastures. Occurs in a wide variety of habitats but is limited in wet or dark conditions.