Rhaponticum repens (=Acroptilon repens )
Russian knapweed, hardheads
rangeland, riparian/aquatic, forest/woodland, cropland/pastureland, disturbed/waste areas
Regions likely to be Impacted:
PH, NE, NW, SE, SW
Present in Neighboring States?
CO, KS, MO, NM, TX
Currently known from Oklahoma?
Steve Dewey, Utah State University, Bugwood.org
What you should know!
Crowds out native species and desirable forage. Can form monocultures. Toxic to horses. Easily spread in contaminated crop seeds. Introduced as a seed contaminant.