Navigation

WeedWise Program A conservation program of the Clackamas County SWCD

Home

WeedWise

HOME
- WEEDWISE HOME
- DISTRICT HOME
ABOUT
- HISTORY
- STAFF
WEEDS
- WEED CLASSIFICATIONS
- BEST MANAGEMENT PRACTICES
RESOURCES
PROJECTS
PARTNERSHIPS
CONTACT
ARCHIVE
FAQ

Return to Content

St. John’s Wort

Eric Coombs, Oregon Department of Agriculture, Bugwood.org

Popular
Latest

Think twice before killing those thistles: Thistle Identification March 21, 2017
Staff Spotlight: Sarah Hamilton, WeedWise Specialist & CWMA Coordinator April 6, 2017
Himalayan Blackberry BMP Now Available January 8, 2015
Tansy Ragwort Poisons Livestock and Neighborly Relationships! July 27, 2016
Blessed Milkthistle invading pasture lands. June 3, 2016

December’s Weed of the Month: English Holly December 1, 2024
WeedWise Technician Spotlight: Hayden Jorde November 19, 2024
Request for Proposals: Priority Invasive Weed and Vegetation Management November 5, 2024
November’s Weed of the Month: Spurge Laurel November 4, 2024
October’s Weed of the Month: Himalayan Blackberry October 1, 2024

SOCIAL MEDIA

Connect with us on social media for additional content

TOPICS

20 Questions Alliaria petiolata Best Management Practices BMP Christmas cinnabar moth Class A Class B Columbia Gorge CWMA CRISP Cytisus scoparius English holly English ivy Fallopia japonica Fallopia sachalinensis Fallopia ×bohemica forest understory Garlic mustard Hedera canariensis Hedera helix Hedera hibernica Ilex aquifolium invasive IPM Irish ivy noxious Orange hawkweed Polygonum cuspidatum Polygonum sachalinensis Polygonum x bohemicum priority Puncturevine Ragwort resources Scotch broom slider Specialist staff Staff Spotlight Tansy thistle Weed-of-the-Month weed profile Weeds weedwise

All original content is copyright © 2009 - 2021 Clackamas Soil and Water Conservation District. No content we provide on this site, or link to from this site, is intended to be used, nor may it be used, as legal advice. We are not responsible for damages resulting from the unauthorized or inappropriate use of information.

The Clackamas Soil and Water Conservation District prohibits discrimination against its customers, employees, and applicants for employment on the basis of race, color, national origin, age, disability, sex, gender identity, religion, reprisal, and where applicable, political beliefs, marital status, familial or parental status, sexual orientation, or all or part of an individual’s income is derived from any public assistance program, or protected genetic information in employment or in any program or activity conducted or funded by the District. The District is an Equal Opportunity Employer.

WeedWise Program