The Extension Service is here to serve the residents of Columbia County, providing knowledge from universities nationwide. We provide research-based information to families, youths, schools, agricultural producers, home gardeners, foresters and governments.

Our office offers a variety of programs, which include 4-H Youth Development, Home Gardening, Agriculture and Small Farms, Family and Community Health, Forestry & Natural Resources and Master Gardeners.


We publish three newsletters from our office:

If you would like to receive these newsletters by email or mail, please give the office a call.


News Items:

Storms and trees in our cities: planning ahead for winter weather - Paul Ries, OSU Extension (wind-firmness, trees with a significant lean, broken branches or decay, saturated soil, urban tree care best practices, monitor and observe changes, don't ever top your trees, don't ignore your trees, properly selecting a qualified, professional, experienced arborist is key)


The Winter Cutworm: a new crop pest first detectied in Oregon in 2001, Amy Dreves, Nicole Anderson and Claire Sullivan (impact in Fall 2015, identification, why such high population of winter cutworm in fall of 2015, management and tools)





Hours of Operation
8 a.m. to 5 p.m.

Closed Fridays from Noon to 1 p.m.


OSU Columbia County Extension

505 N. Columbia River Hwy

St. Helens, OR 97051

PH: 503-397-3462

FAX: 503-397-3467

For information on public transportation, visit the Columbia County Rider website.


We offer classes, workshops, opportunities for youth and adult volunteer activities:

Volunteer as a Master Gardener, Master Woodland Manager, or with the 4-H youth program

Nutrition education events

Home Garden educational events


Columbia County General State/County Resources