Canada thistle, Californian thistle, creeping thistle, field thistle
Regions likely to be Impacted:
Present in Neighboring States?
CO, KS, MO, NM, TX
Currently known from Oklahoma?
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
What you should know!
Crowds out native species. Reduces crop and forage yields.Can spread from contaminated seed, irrigation channels, or living organisms.