Linn County’s Right-of-Way Vegetation Management Program emphasizes the establishment of adaptable and long-lived vegetation via:
Soil amendments added where appropriate
Non-competitive stabilizing crop seeding
Permanent seeding / plantings at appropriate times with species matched to the soils and hydrology of the site
Certified weed seed free mulch used on all applications
Prescribed burning (spring and fall – fall only in areas with adequate surface roughness adjacent to rights-of-way to retain rolling and skipping snow)
Entire right-of-way mowed once during the first growing after permanent seeding (July 18 to August 12)
Right-of-way spot mowed once during second growing season after permanent seeding (June 6 to August 12)
Adjacent property owner education
Work in the right-of-way permits
Hard Surfaced Roads (including county seal-coated roads): Three times during the growing season (target completion dates: June 10, August 12, October 14)
Gravel Roads: Two times during the growing season (target completion dates: July 8, September 30)
Spot Mowing Spot mowing is done to control noxious weeds and potential woody hazards and obstructions.
Rights-of-way 66 feet and less in width are spot mowed every 12 months.
Rights-of-way greater than 66 feet in width are spot mowed from July 18 to August 12.
Spot Spraying (Herbaceous Plants) Foliar spraying of noxious weeds / invasive species (physiology of individual plant species, circumstances not practical to mow or otherwise control)
Cirsium Arvense – Canada Thistle (bud to bloom)
Cirsium Vulgare – Bull Thistle (bud to bloom)
Carduus Nutans – Musk Thistle (bud to bloom)
Dipsacus spp. – Teasel (bud to bloom)
Euphorbia Esula - Leafy Spurge (fall)
Polygonum Cuspidatum - Japanese Knotweed (early to mid growing season)
Tree / Shrub Management
Hazard and obstruction removal (storm damage, 10-foot Clear Zone - traffic / speed / slope)
Maintenance of clear zone (16 feet by 16 feet - ANSI A300)
Cut stump herbicide treatment and foliar spraying woody species less than 5 feet in height (physiology of individual plant species, circumstances not practical to mow or otherwise control) including requests for service (in a timely manner).