Requesting Herbicide Treatment

Some invasive plant species require treatment with herbicide for effective control. We support Forest Steward efforts by coordinating professional crews to do herbicide applications. No herbicide application is allowed by Forest Stewards on Parks property.

Please fill out the appropriate form to request the herbicide treatment that you need at your restoration site. You can complete the form anytime during the year, but note that we compile the treatment list for the summer by June 1 annually .

Knotweed Treatment Request Form

Woody Invasive Treatment Request Form

Special Weeds Treatment Request Form *

*Examples might be large patches of archangel or poison hemlock.

Want to know more about these species? Take a look at the noxious weed resources from King County.

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