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Invasive Plants

Invasive plants are a destructive force, causing harm to the environment, economy, and sometimes even to human health. Marion SWCD provides resources to help you learn to identify and manage some of the species of concern in our region.

Branch with spiny green needles and small white flowers
Gorse Ulex europaeus

Invasive Plant Database

Search for invasive plants in our database, filter by habitat type, growth form, and other characteristics.

Mid-Willamette CWMA

The Mid-Willamette Cooperative Weed Management Area (CWMA) is a partnership dedicated to combating invasive weeds across the region. The CWMA promotes invasive plant education, community outreach, weed inventory, data management, and weed prevention and control activities.

a dark teal circle with a thistle inside and a shovel slashing across the circle
a screenshot from the bramble ID guide showing native Pacific dewberry and non-native Himalayan blackberry

Plant Identification Guides

Having trouble telling different but similar plants apart? Our Invasive Plant Program is rolling out a series of Plant ID Guides starting with a handy Bramble ID Guide.

Invasive Plant Education

Invite Marion SWCD to talk to your group about invasive plants or view recorded presentations on our YouTube Channel.

How to Report Invasives

Have you seen something suspicious in your backyard or neighborhood? Are you having trouble identifying something you’ve found? Report potential invasive species you’ve found to the Online Hotline. 

Recommended Invasive Species Resources

A circle that is a yellow semi circle on top with two green leaves below and the bottom is a semicircle of blue

ODA Noxious Weed Control Program

​​​The Noxious Weed Control Program serves as a leader in protecting valued natural and agricultural resources from the introduction and spread of noxious weeds. Noxious Weed Control Program staff implement early detection and rapid response projects for new invaders, provide assistance to those implementing integrated weed management projects across the state, deliver education outreach programs, and much more.

OSU Extension logo has a shield with a beaver some trees a book and the words Oregon State University Extension Service

Solve Pest Problems

Learn research-based, safe, and effective tactics for common garden and property pests and weeds. We provide non-chemical methods alongside the most effective and least toxic chemical options available, to reduce risk to people and the environment.

The letters OISC in green with a landscape scene in the O.

Oregon Invasive Species Council

Oregon Invasive Species Council’s mission is to protect Oregon’s natural resources and economy by planning and leading a coordinated and comprehensive campaign to prevent the introduction of invasive species and eradicate, contain, or manage existing invasive species in Oregon.

the state of Oregon with an insect and leaf and the words iMapInvasives.

Oregon iMap Invasives

iMapInvasives is a comprehensive tool for online invasive species data management, with many aspects to appeal to natural resource managers, volunteers, and the public.

green leaves on lighter green background with the words seek by iNaturalist and white leaf

Seek by iNaturalist

Use the power of image recognition technology to identify the plants and animals all around you.

a circle that is green and brown with the letters WIN inside

Western Invasives Network

The Western Invasives Network (WIN) is a regional partnership network of individuals, agencies, and organizations concerned with rural and urban invasive weed issues in northwestern Oregon and southwestern Washington. WIN encourages cooperative weed management through field trips,
grant research and writing, workshops and trainings, partnership recruitment, education and outreach, inventory and control projects, and meetings.

Contact Us

Our staff offer education and technical assistance to help you manage invasive plants.

Sarah Hamilton in the snow with a red head scarf
Sarah Hamilton
Native and Invasive Plant Specialist
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