Managing Invasive
or “Noxious” Species

Invasive and noxious species are a constant threat to Oregon. These threats outcompete native plants and animals, can be devastating to important state industries, threaten the safety of our drinking water, and limit recreational opportunities in the state.

Top Target Species in Yamhill County:

Other Invasive Species

While the species listed above are some of the top priorities for invasive species throughout the state, there are many other invasive species that should be closely monitored and removed when possible.

• Oblong Spurge
• Norway Maple
• Periwinkle
• Fennel
• Evergreen Bugloss
• English Laurel
• Butterfly Bush
• English Hawthorn
• Purple Loosestrife
• Parrotfeather
• Spotted Jewelweed
• Poison Hemlock
• Herb Robert
• False Brome
• Spurge Laurel
• English Ivy (featured in our Summer 2024 newsletter!)
• Tansy Ragwort
• Jubata Grass
• Policeman’s Helmet
• European Mountain Ash

How We Help

If you have an invasive species concern, we can assess and recommend a path for treatment.

Financial Support

If you have one of the following species on your property, we can provide treatment at no cost: Garden Yellow Loosestrife, Garlic Mustard, Knotweeds, and Mouse-ear Hawkweed.

To request this service please fill out the Permission to Access and Treat on Private Lands Form and contact us at [email protected]

Additional Resources

Project Ideas, Examples, & Successes