Annual Survey Maps -

Russian knapweed - Rhaponticum repens

This map only represents pest survey data submitted to the NAPIS database by participating states for the year selected. This is not a distribution map; the map only displays one year of survey data at a time. CERIS and USDA-APHIS-PPQ do not certify the accuracy or completeness of this map.

If you wish to cite this map, please use the following format:

  • Center for Environmental and Research Information Systems (CERIS). Purdue University. "Survey Status of Russian knapweed - Rhaponticum repens ()." Retrieved from
View Pest Information
    Annual Survey Maps
Download Survey Results
  • Established by Consensus
  • Established by Survey
  • Not Found
  • Found
  • Being Eradicated
  • Eradicated
  • No Survey