Find an Invasive
Please check the county weed board website to determine whether the plant is considered a high priority species or on the monitor list. Feel free to contact the county weed board or the contact person on the website for more information
For Washington state: www.nwcb.wa.gov/links.htm
Definitions of these classes for Washington state are:
- Class A Noxious Weeds: - Non-native species that are limited in distribution in Washington. State law requires that these weeds be eradicated.
- Class B Noxious Weeds: Non-native species that are either absent from or limited in distribution in some portions of the state but very abundant in other areas. The goals are to contain the plants where they are already widespread and prevent their spread into new areas.
- Class C Noxious Weeds: Non-native plants that are already widespread in Washington State. Counties can choose to enforce control, or they can educate residents about controlling these noxious weeds.
- Monitor List Weeds: Putting plants on the Monitor List allows us to gather more information about them, such as their distribution in the State, observable impacts, spread rate, etc. Each Monitor species has a sponsor, who has volunteered to watch populations of the plant and gather useful information. We welcome additional information and especially sightings. If you think you have seen a monitor plant, please contact its sponsor or us directly at firstname.lastname@example.org.
For Oregon state: www.oregon.gov/oda/plant/weeds/lists.shtml#Noxious_weed_profiles
Definitions for Oregon state are:
- “A” Designated Weed – a weed of known economic importance which occurs in the state in small enough infestations to make eradication or containment possible; or is not known to occur, but its presence in neighboring states make future occurrence in Oregon seem imminent
- Recommended action: Infestations are subject to eradication or intensive control when and where found.
- “B” Designated Weed – a weed of economic importance which is regionally abundant, but which may have limited distribution in some counties.
- Recommended action: Limited to intensive control at the state, county or regional level as determined on a case-by-case basis. Where implementation of a fully integrated statewide management plan is not feasible, biological control (when available) shall be the main control methods.
- “T” Designated Weed – a priority noxious weed designated by the Oregon State Weed Board as a target on which the Oregon Department of Agriculture will develop and implement a statewide management plan. “T” designated noxious weeds are species selected from either the “A” or “B” list.
For British Columbia: www.agf.gov.bc.ca/cropprot/weedguid/weedguid.htm#noxious or www.weedsbc.ca
Contact Gino Graziano for additional information: email@example.com