Noxious Weed Control Program

Musk thistle flower Noxious weeds are one of the greatest threats to the 
Kansas  environment because they displace native plant species, interfere with the production of agricultural crops, increase erosion, destroy wildlife habitat and decrease property values.

The Kansas Department of Agriculture administers the state Noxious Weed Law.  The State Weed Specialist and Noxious Weed Control Program provide technical assistance to individual landowners, state and federal agencies as well as other companies and organizations that manage land in our great state.

Kansas Noxious Weeds

There are 12 plant species designated as noxious weeds in Kansas.  Other species may be  designated as county option weeds. Check with your County Weed Department to find out if any other species have been designated as noxious in your county.

Kansas Noxious Weed List

Category A weeds

These weeds are generally not found in the state or are found limited in distribution throughout the state and shall be subject to exclusion from the state or active eradication wherever detected statewide, in order to protect neighboring lands and the state as a whole.

Category B weeds

These weeds have discrete distributions throughout the state and shall be subject to control wherever populations have become established within the state and subject to active eradication wherever populations are not established.

Category C weeds

These weeds are well-established within the state and known to exist in larger or more extensive populations in the state.  New populations shall be subject to control efforts directed at reducing or eliminating those populations and known and established populations of Category C noxious weeds shall be managed by any approved control method.

Noxious Weeds Survey Data

Kansas Noxious Weed Law and Regulations

The Noxious Weed Law was established to protect landowners from the encroachment of noxious weeds from neighboring lands.  Since it was enacted in 1937, it has been revised and imporoved upon several times, resulting in today's version.

The Kansas Noxious Weed Law and Regulations


Controlling Noxious Weeds

The Kansas Noxious Weed Law requires that all people, which includes the private landowners, state, counties, townships, cities, and their agencies, boards and departments, any companies or corporations that own or manage land, control the spread of and eradicate any noxious weeds on any land the own or supervise, and to use the official methods approved and adopted by the secretary. These methods will be based on the most current available science and will include, if applicable, control and eradication methods from each of the Integrated Weed Management, including biological, chemical, cultural, and mechanical methods of control and eradication. 

Official Noxious Weed Control Programs

Noxious and Invasive Weed Reports

Archived Noxious and Invasive Weed Reports

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Noxious and Invasive Weed Resources


Sarah Hawver
Export Coordinator/Office Manager


Scott Marsh
Weeds and Seed Specialist

785-207-2118 (M)

Jeff Vogel
Program Manager

785-207-0586 (M)