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After three years, a most-wanted weed gets arrested

In 2019 we wrapped up a three-year project to rid our own and neighboring properties along the Necanicum River of invasive policemans helmet (Impatiens glandulifera). Dozens of volunteers worked side-by-side with our summer stewardship interns to pull, pile, and stomp on the plant so it couldn’t reproduce. In the future we’ll be keeping a close eye on the riverbank for new infestations and nipping them in the bud. The project was a partnership with Necanicum Watershed Council and Oregon Watershed Enhancement Board. 


2019 Summer Stewardship Interns

Delaney Newport, Stewardship Outreach Intern
Michelle Patterson, Stewardship Maintenance Intern
Alex Galluzzo, Stewardship Monitoring Intern


  • Policeman’s helmet gets its common name from the resemblance of its blossoms to traditional British policemen’s headwear. Photo: Ethan Whitecotton
  • NCLC’s summer stewardship interns spent June and July pulling policeman’s helmet at Circle Creek Conservation Center and elsewhere in the Necanicum River watershed.
  • Intern Michelle Patterson is also an artist; here’s her tongue-in-cheek summation of the project (that’s her self-portrait at far left).