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Shawnee County, KS Landscaping Rules: Weed Ordinances (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Governing law
K.S.A. 2-1314 et seq., Kansas Noxious Weed Law
Named noxious weeds
12 species, incl. bindweed, thistle, kudzu
County treatment penalty
10% of treatment cost
Unpaid cost recovery
Property tax lien
Protest deadline
10 days from billing notice
Appeal deadline
30 days to district court

Summary

Kansas's Noxious Weed Law, K.S.A. 2-1314, requires every Shawnee County landowner to control and eradicate twelve named noxious weeds, backed by county entry, notice, and lien powers that can bill owners for county-performed treatment plus a 10 percent penalty.

These county ordinances apply to unincorporated areas of Shawnee County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

(a) The secretary shall adopt rules and regulations to declare species of plants as noxious weeds in the state. Once a species of plant has been declared to be a noxious weed, it shall be considered a noxious weed in every county of the state...It shall be the duty of persons to control the spread of and to eradicate all species of plants declared to be noxious weeds on all lands owned or supervised by them and to use such official methods for the control and eradication, and at such times as are approved and adopted by the secretary. (b) The following species of plants shall be considered noxious weeds: Kudzu (Pueraria lobata), field bindweed (Convolvulus arvensis), Russian knapweed (Centaurea repens), hoary cress (Cardaria draba), Canada thistle (Cirsium arvense), quackgrass (Agropyron repens), leafy spurge (Euphorbia esula), bur ragweed (Ambrosia grayii), pignut (Hoffmannseggia densiflora), musk (nodding) thistle (Carduus nutans L.), Johnson grass (Sorghum halepense) and sericea lespedeza (Lespedeza cuneata).

Full Breakdown

A. 2-1314(a) makes it "the duty of persons to control the spread of and to eradicate all species of plants declared to be noxious weeds on all lands owned or supervised by them," using official control methods approved by the secretary of agriculture. Subsection (b) names the twelve weeds: kudzu, field bindweed, Russian knapweed, hoary cress, Canada thistle, quackgrass, leafy spurge, bur ragweed, pignut, musk (nodding) thistle, Johnson grass, and sericea lespedeza; subsection (d) also lets the Shawnee County Board of Commissioners add locally troublesome species to a county-specific noxious weed list with the secretary's approval.

A. 2-1330 gives county weed supervisors and other authorized officials a right of entry onto property to inspect for infestation, provided they attempt to notify the owner and let them accompany the inspection. A. 2-1331 requires the weed supervisor to notify a landowner of any infestation found, either by general newspaper publication or an official mailed notice, specifying a treatment deadline; if inspection later shows unsatisfactory progress, a legal notice by certified mail follows. A. 2-1332 requires an itemized bill to the owner that includes a 10 percent penalty charge, interest at the state's delinquent-tax rate, and, if unpaid within 30 days, a lien recorded against the property and collected like other property taxes; the board of county commissioners may also negotiate a payment plan.

A. 2-1321: file a protest with the board of county commissioners within ten days of the billing notice, and if still dissatisfied, file a written notice of appeal with the district court clerk within thirty days of the board's decision, triggering a docketed court case.

Violations & Fines

There is no flat height limit or citation ticket under this state law; instead, non-compliance triggers the county's self-help remedy. After legal notice under K.S.A. 2-1331, the weed supervisor may enter and treat the infested land, then bill the owner under K.S.A. 2-1332 for the full cost of chemicals, labor, and equipment plus a 10 percent penalty; unpaid balances draw delinquent-tax interest and become a lien against the owner's entire contiguous tract, collected the same way as unpaid property taxes, with any dispute over the charge appealable first to the county commission and then to district court under K.S.A. 2-1321.

Frequently Asked Questions

What weeds am I legally required to control on my Shawnee County property?
K.S.A. 2-1314(b) names twelve noxious weeds: kudzu, field bindweed, Russian knapweed, hoary cress, Canada thistle, quackgrass, leafy spurge, bur ragweed, pignut, musk thistle, Johnson grass, and sericea lespedeza. The county can also add locally troublesome species with state approval under subsection (d).
Can the county come onto my land to check for noxious weeds?
Yes. K.S.A. 2-1330 authorizes county weed supervisors and other officials to enter and inspect property for noxious weed infestation at reasonable times, though on private property they must attempt to notify the owner first and let them accompany the inspection.
What happens if the county treats my land itself?
K.S.A. 2-1332 requires the county to bill the owner an itemized statement covering the cost of chemicals, labor, and equipment, plus a 10 percent penalty and delinquent-tax interest; if unpaid within 30 days, the amount becomes a lien on the property collected like other taxes.
Can I dispute a noxious weed treatment bill from Shawnee County?
Yes. K.S.A. 2-1321 lets a dissatisfied landowner file a protest with the board of county commissioners within 10 days of the billing notice, and appeal an adverse decision to the district court within 30 days by filing a written notice of appeal.

Sources & Official References

Other rules in Shawnee County

All Shawnee County rules

How Shawnee County compares: Cities with the Strictest Weed and Property Maintenance Rules·Compare Shawnee County to another location·View the Kansas landscaping rules overview

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