Lincoln County Public Works


Lincoln County
County website

Lincoln County’s Integrated Vegetation Program: 

As part of the County Road Department, the Vegetation Program utilizes Integrated Pest Management tools for control of vegetation along county roads.

Lincoln County Road Department diligently maintains the vegetation on the rights-of-way in this beautiful part of Oregon.  Regular maintenance is performed for driver safety, visibility, road shoulder and ditch integrity, as well as noxious weed control.  Our approach integrates preventive, cultural, mechanical, biological and chemical control measures. 
The County uses mowing, brushing, grading, manual weed-pulling/cutting and location-specific treatment with herbicides.   Indiscriminate road spraying is not utilized in Lincoln County.  Noxious and invasive treatments are specifically applied by state-licensed and trained staff utilizing effective formulations and methods. 

Yellow signs are posted with information regarding the herbicide to be used and the anticipated date of treatment. Orange signs are posted the day of treatment stating the herbicide used. 

For more information regarding the No-Spray Permit Program, Click here.
The Vegetation Management Program operates under the authority of the Lincoln county Board of Commissioners with guidance from
The Vegetation Management Advisory Committee.  The purpose of this committee is to assist and advise Lincoln County in vegetation management operations and practices, information gathering, education, and implementing an integrated management system.

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Steps of Integrated Vegetation Management Policy

Main Goal: To stress the control of undesired vegetation and noxious weeds and enhance the environment for desirable plants.

  1. Conduct an annual inventory of management areas.  Identify and record areas and species in need of control (scouting).
  2. Determine the injury level of identified potential pest.  Assess and interpret specific problem areas/Pests.
  3. Determine the threshold (or level of infestation at which control practices are justified) of the components in the management area.
  4. Decide if any action is needed and, if so, consider treatment options that are the most effective, efficient, cause-oriented and least disruptive to the environment, and the community.
  5. Monitor and test for the success of the program.
Prevention is the key!
Before buying an unfamiliar plant from a nursery or taking a bulb or division from a friend, check on the plant's invasiveness (If in doubt, don't plant it)
Watch out especially for Yellow Flag Iris, Crocosmia, Yellow Archangel, and a Variegated Knotweed - All have been sold recently in Lincoln County.
Join volunteer programs -neighborhood weed clean-ups, ivy pull days or organize one yourself!
Avoid spreading seeds by cleaning equipment and vehicles.
Support biological control efforts on these plants when possible.
Pull new weeds, taking as much of the rootstock as possible.
Mow or cut to prevent seed set, repeat cuts will weaken plants.
Avoid allowing weeds on your property to spread to a neighboring property.
Identify and report invaders!  Call 1-866-INVADER to report invasive species.


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Lincoln County: Weeds to watch out for....

Listed below are noxious weeds of concern to Lincoln County.

[Click on smaller images to view larger version]
canada thistlespace photo
photo: Canadian Thistle

scotch broomspace purple loostrifespace french broomspace knotweeds  
reed canary grassspace gorsespace english ivyspace  space  






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More detailed information on each weed:
thistle Canada Thistle (Cirsium arvense)
thistle Tansy Ragwort (Senecio jacobaea)
thistle Blackberries - Himalayan or Armenian (Rubus armeniacus, R. procerus, R. discolor)
thistle Scotch Broom (Cytisus scoparius)
thistle Purple Loostrife - (Lythrum salicaria)
thistle French Broom(Genista monspessulana)
thistle Knotweeds (Fallopia or Polygonum species)
thistle Reed Canary Grass
thistle Gorse (Ulex europaeus)
thistle English Ivy
(Hedera helix (H. hibernica)


Noxious and Invasive Coastal Weeds to watch out for in Lincoln County:
thistle Butterfly Bush (Buddleja davidii/B.variabilis)
thistle False Brome (Brachypodium sylvaticum)
Herb Robert (Geranium robertianum)
thistle Old Man’s Beard (Clematis vitalba)
thistle Policeman’s Helmet (Impatiens glandulifera)
thistle Spurge Laurel (Daphne laureola)
thistle Yellow Flag Iris (Iris pseudacorus)
Crocosmia or Montbretia
thistle English laurel

thistle Sweet Fennel

thistle Yellow Archangel



Oregon Invasive Hotline - Report Here!
Invasives Blog – How Invasives are affecting Oregon
Oregon State Invasive Species Site - Invasive Species Council-lots of good information
Invasive Species and Firewood – Buy firewood locally
GardenSmart Oregon – Gardening Advice; replace Invasives with non-invasive plants
The Silent Invasion” OPB Invasives Quick Guide
E.D.R.R.- Early Detection Rapid Response – more information
Noxious Weed Control:  - Help out and learn more
Weed policy - Oregon Noxious Weed List

Lincoln County Contact Links:
Think you might know the location of a noxious weed in Lincoln County?
(Please note the location, and a digital photo of the plant would be great!)

Send info to:

Chris Cornwell:
County Vegetation Technician and Weed Coordinator
(541) 574-1248

*pdf files on this page require Adobe Reader to view. Free download: Get Adobe Acrobat Reader

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Lincoln County Public Works Department
880 NE 7th Street  •  Newport, Oregon 97365
(541) 265-5747  •  fax: (541) 574-1295  •