Lesser celandine © L. Graham

What’s All the Fuss About Invasive Species?

Weeds are expensive!

Have you heard the news? A silent invasion is infiltrating Benton County and compromising the integrity of our habitats and natural resources. Invasive plants grow fast and tend to form monocultures, reducing biodiversity, decreasing water quality and contributing to erosion. Invasive species infest an additional 4,500 acres of public lands and waterways in the U.S. each day. The Oregon Department of Agriculture Director estimates that Oregon spends $81 million annually on invasives that are harmful to agriculture, water resources, or human health.

Characteristics of Noxious Weeds

  • Produce many seeds
  • Successful dispersal strategies
  • Sexual and asexual reproduction
  • Grow faster and mature earlier than natives
  • Lack natural predators


What You Can Do

There is so much you can do to help win the battle against invasive species! View our top four suggestions and get involved.

See what you can do!

Weed Profiles

yellow starthistle flower

View identification information and more for the invasive plants on the Benton County CWMA list.

View the weeds!

Benton County Cooperative Weed Management Area

BC CWMA logo-horizontal

CWMAs are local organizations that coordinate weed management activities. Our sub-committees include: 1) organizational structure, 2) EDRR, 3) Landscape Level Strategy, and 4) Education & Outreach. Read more about our group and find out how you can get involved!

Visit the BC CWMA pages.

Weed Spotters

Weed Spotters after pulling Scotch Broom at Half Moon Bend

Our trained volunteers are familiar with the identification, costs and recommended control methods for some of our area’s MOST WANTED invasive species. You can be a Weed Spotter, too!

More about Weed Spotters!

Teen Weed Spotters

Teen Weed Spotters logo

This program is no longer active, but you can still read about it! Teen Weed Spotters was a cooperative program between Benton SWCD and OSU Extension Service, Benton County 4-H for teens in grades 10-12 to participate in a series of hands-on training sessions to learn about invasive species that threaten local habitats in Benton County.

Read all about Teen Weed Spotters!

Neighborhood Captains

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Neighborhood Captains are concerned community members living in North Albany who share information with their neighbors.

Learn more!