Invasive Plant Resources

Purple Canada thistle and yellow tansy ragwort are invasive plants that grow in disturbed lands.

NPS Exotic Plant Management Team

The sources listed below have information
on invasive exotic plants and ways to
stop their spread.

More information on Olympic’s website:

Help Stop the Spread of Invasive Species
Nonnative Species
Invasive Exotic Plants
Leave-No-Trace
Volunteer Opportunities

 

Reporting Sightings within Olympic National Park:

If you can positively identify invasive exotic plants, report when and where you see the weeds to the nearest ranger station or visitor center.

 

Park staff and volunteers work to restore forested areas by pulling up English ivy.

NPS Volunteer Office

Olympic Peninsula
Noxious Weed Control Boards:

Washington State NWCB
Clallam County NWCB
Mason County NWCB
Grays Harbor County NWCB
Jefferson County NWCB

Other sources:

NPS: Invasive Plant Management
National Invasive Species Council
USDA APHIS: Plant Pest Program
USDA Forest Service: Invasive Plants
Center for Invasive Plant Management

Some of the invasive plant species information on this website came from “Management of Exotic Plants in Olympic National Park” by Richard W. Olson, Jr., Edward G. Schreiner, and Lance Parker.