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The original item was published from 4/26/2017 9:44:22 AM to 5/19/2017 4:23:18 PM.

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Public Works

Posted on: April 26, 2017

[ARCHIVED] Spring 2017 Invasive Weed Management is Underway

Springtime invasive weed management operations within right of way boundaries along County roads are underway. The County’s contractor, under the supervision of Natural Channel Design (NCD), is using a broadleaf herbicide for these spot treatment operations. The herbicide, which does not target native grasses and dries quickly, is being applied with a blue indicator dye so that treated areas can be clearly identified. 

Weed removal operations for this year are scheduled for County roads in the Baderville, Doney Park, Fernwood, Fort Valley, Munds Park, Parks, Pine Dell and Schultz Flood areas. These operations, which will continue into May, target invasive weeds that include diffuse knapweed, musk knapweed, Scotch thistle, Russian thistle and Horehound. These are highly invasive plant species that can quickly dominate areas of disturbance and outcompete desired native vegetation.
Removal of invasive weeds supports native plant revegetation. The timing of treatments is critical to prevent seed set. Spring is the optimal season for herbicide treatment as invasive weeds are small and actively growing. The County also is planning to conduct mechanical weed removal operations on County roads late this summer. For more information on invasive weed removal please visit

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