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Public Works

Phone: 913-715-8300

1800 W. Old Highway 56, Olathe, KS 66061

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Noxious Weed Management

What are Noxious Weeds?

Noxious weeds are plants that the Kansas Legislature has declared to have a negative impact on agriculture, public health, the environment or the economy.

The weeds declared noxious are shown below.  Click on the name below the image for more details about the weed.

Bur Ragweed

Bur ragweed


Canada Thistle

Canada thistle


Field Bindweed

Field bindweed


Hoary Cress

Hoary cress







Leafy Spurge

Leafy spurge


Musk Thistle

Musk thistle





Russian Knapweed

Russian knapweed


Sericea lespedeza

Sericea lespedeza



Noxious Weeds currently found in Johnson County: Field bindweed, Johnsongrass, Musk thistle, Sericea lespedeza.

Impacts of Noxious Weeds

Weeds, including those declared noxious, impacted the U.S. economy by an estimated 55 billion dollars in 2012.  Invasive species, including noxious weeds, are the #2 threat to native biodiversity, worldwide.  Additionally, noxious and invasive weeds pose a threat to electrical utility reliability, municipal water sources and the safety of our food supply.