Lane County’s priority is to administer an Integrated Vegetation Management Program that is open and transparent to the public, ensuring residents have accessible and accurate information regarding treatments and the decision making processes that guides our use of herbicides. Herbicide applications are limited in use and follow adaptive management approaches that allow flexibility when facing maintenance concerns and challenges as they arise.


Permitted Product List
Lane County Road Maintenance Division has three herbicide products that have been approved for use and make up our Permitted Product List. These products have been annually reviewed and approved by the Public Health Advisory Committee and the Board of Health. 

Vastlan - - active ingredient triclopyr
Milestone - - active ingredient aminopyralid
Ecomazapyr 2SL - - active ingredient imazapyr


Public notifications
As part of the transparency process, Lane County Roads Division will post any upcoming right-of-way herbicide application locations on this webpage. Pre-application notices will be listed by  road name at least seven days prior to treatment for any guardrail and noxious weed sites. Notices will remain a minimum of three days post application and will be marked as completed.

Guardrail maintenance:

The following roads are scheduled to receive herbicide applications to guardrail locations:

posted 9.2.2025
London Rd
Cottage Grove Reservoir Rd
Shoestring Rd
Quaglia Rd
Jasper-Lowell Rd
Place Rd
Big Fall Cr Rd
Winberry Rd
Old Pengra Rd


Posted 8.18.2025; completed 9.2.2025
McKenzie View Dr
Old Mohawk Rd
Hill Rd
Marcola Rd
Parsons Creek Rd
Cartwright Creek Rd

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Please visit our 2025 Road Treatment Map for locations and detailed information.

Questions about our vegetation management program?
Please call our Natural Resource Specialist at (541) 682-8521



2024 Spray Data
2024 Lane County IVM Annual Report

2023 Spray Data
Due to continued staff hiring and retention issues, limited herbicide applications were made within Lane County road rights-of-way during 2023.
2023 Lane County IVM Annual Report
2023 Annual Spray Report
2023 Summary Dashboard

2022 Spray Data
Due to the continued impacts on staff hiring and retention, no herbicide applications were made within Lane County road rights-of-way during 2022.
2022 Lane County IVM Annual Report
2022 Annual Spray Report
2022 Summary Dashboard

2021 Spray Data
Due to the impacts of the COVID19 pandemic on staff retention, no herbicide applications were made within Lane County road rights-of-way during 2021.
2021 Lane County IVM Annual Report
2021 Annual Spray Report
2021 Summary Dashboard

2020 Spray Data
August 2020 Spray Report
June/July 2020 Spray Report
2020 Lane County IVM Annual Report
2020 Annual Spray Report

2019 Spray Data
 2019 Lane County IVM Program Annual Report      
 2019 Annual Spray Report 
 2019 Summary Dashboard     
 Coast Fork Willamette Watershed Council Knotweed Spray Report Oct 2019
 OCTOBER 2019 Spray Report
 SEPTEMBER 2019 Spray Report
 AUGUST 2019 Spray Report
 JULY 2019 Spray Report
 JUNE 2019 Spray Report

                

Previous Year Treatment Summaries