Roadside Vegetation Control


As a part of the City of Kennewick’s vegetation control program, the Public Works Department contracts out for the application of roadside herbicide.  This operation usually takes place on or around April 18, weather dependent.  Application vehicles will be operating between the hours of midnight and 6:00 am, Monday through Friday, through the months of April and early May.  The primary focus will be to control weeds in the curb/gutter line and gravel shoulders on all of the City’s main roadways.  

 A  yellow dye is mixed with the herbicide to assist with the wet application, which typically dries within 30 minutes.   The yellow dye will fade in three to four weeks and the application is safe for people and pets to enter once it is dry.  If there is inadvertent contact with wet herbicide, it is recommended to remove contaminated clothing and rinse skin immediately with plenty of water for 15 - 20 minutes.

Please contact the City of Kennewick’s Public Works Department at (509) 585-4419 if you would like to be added to the “No Spray” list if you have concerns with the application of herbicide on your street frontage.

2023/2024 Current Contract Work

MSDS Sheets

Herbicide Annual Notice