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Public Works

Phone: 913-715-8300

1800 W. Old Highway 56, Olathe, KS 66061

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General Notice To Control Noxious Weeds

K.S.A. 2-1314 Noxious weeds; control and eradication; listing.

It shall be the duty of persons, associations of persons, the secretary of transportation, the boards of county commissioners, the township boards, school boards, drainage boards, the governing body of incorporated cities, railroad companies and other transportation companies or corporations or their authorized agents and those supervising state-owned lands to control the spread of and to eradicate all weeds declared by legislative action to be noxious on all lands owned or supervised by them and to use such methods for that purpose and at such times as are approved and adopted by the Kansas Department of Agriculture. The term noxious weeds shall mean 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.), Johnsongrass* (Sorghum halepense) and Sericea lespedeza* (Lespedeza cuneata).
*Found in Johnson County

 

Field bindweed

Field bindweed

 

Musk thistle

Musk thistle

 

Johnsongrass

Johnsongrass

 

Sericea lespedeza

Sericea lespedeza

 

 

 

Identifying Noxious Weeds

Identification and Information

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 plants declared noxious by the State of Kansas are shown below; click on their name to learn more.  For specific questions, please contact the Noxious Weed Director at 913-715-8358.

 

Bur ragweed

Bur ragweed

 

 

 

 

 

 

 

 

 

Canada thistle

Canada thistle

 

 

 

 

 

 

 

 

 

Field bindweed

Field bindweed

 

 

 

 

 

 

 

 

 

Hoary cress

Hoary cress

 

 

 

 

 

 

 

 

 

Johnsongrass

Johnsongrass

 

 

 

 

 

 

 

 

 

Kudzu

Kudzu

 

 

 

 

 

 

 

 

 

 

Leafy spurge

Leafy spurge

 

 

 

 

 

 

 

 

 

Musk thistle

Musk thistle

 

Pignut

Pignut

 

 

 

 

 

 

 

 

 

Quackgrass

Quackgrass

 

 

 

 

 

 

 

 

 

Russian knapweed

Russian knapweed

 

 

 

 

 

 

 

 

 

Sericea lespedeza

Sericea lespedeza

 

 

 

 

 

 

 

 

 

 

 

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.

Noxious Weeds currently found in Johnson County: Field bindweed, Johnsongrass, Musk thistle, Sericea lespedeza.
To learn more about these weeds, please visit the Identifying Noxious Weeds page.

Impact 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.

Informational Videos

Purchase Herbicides

Herbicides for purchase

General Information and Restrictions

  • Please note: Herbicide products MUST be applied to land located in Johnson County, Kansas, otherwise the sale will be voided.
  • The Noxious Weed department does not sell brush killer or "dandelion spray"; we do not sell herbicides for gravel driveways, arenas, fence rows or bare ground.
  • Glyphosate purchases are RESTRICTED to 2 1/2 gallons per season. PastureGard HL and Remedy Ultra not available until May 15 and are sold for the specific use of Sericea lespedeza control only.

We accept CASH or CHECK only.  (Checks are preferred as we may not be able to provide change for large bills)

 


 

Herbicide Price List for Noxious Weed Control

**Prices and products subject to change. Click on product name to learn more**

 

4 lb Amine  (Corn Belt)  EPA Reg Number 11773-2

  • Target Weed(s): Field bindweed, Bull thistle, Canada thistle, Musk thistle

 

Makaze   (Loveland)   EPA Reg Number 34704-890

  • Target Weed(s): Field bindweed, Canada thistle, Kudzu, Johnsongrass, Multiflora rose, Quackgrass

 

Outrider   (Valent)   EPA Reg Number 59639-223

  • Target Weed(s): Johnsongrass

 

PastureGard HL   (Dow AgroSciences)   EPA Reg Number 62719-477

  • Target Weed(s): Sericea lespedeza

 

Range Star   (Agri Star)    EPA Reg Number 42750-55

  • Target Weed(s): Field bindweed, Bull thistle, Bur ragweed, Canada thistle, Kudzu, Leafy spurge, Multiflora rose, Musk thistle, Pignut, Russian knapweed

  

Remedy Ultra   (Dow AgroSciences)    EPA Reg Number 62719-552

  • Target Weed(s): Sericea lespedeza

 

Tordon 22K   (Dow AgroSciences)    EPA Reg Number 62719-6

  • Target Weed(s): Field bindweed, Bull thistle, Bur ragweed, Canada thistle, Kudzu, Leafy spurge, Multiflora rose, Musk thistle, Pignut, Russian knapweed

 

 

 

 


 

4 lb Amine  (Corn Belt)  EPA Reg Number 11773-2

Cost:  $9.55 per gallon, $21.75 per 2.5 gallons - Private Johnson County landowner
Cost:  $32.28 per 2.5 gallons - Governmental agency

  • Target weeds: Bull thistle, Canada thistle, Field bindweed, Musk thistle
  • Active ingredient(s): 2,4-D amine
  • Acid equivalent: 3.8 lb./gal
  • Broadcast rate: 2-4 pints per acre
  • Spot treatment: 4 ounces per 3 gallons
  • Rainfast interval: 4 hours
  • Soil residual: 2-4 weeks

 

Makaze   (Loveland)   EPA Reg Number 34704-890

Cost:  $31.55 per 2.5 gallons - Private Johnson County landowner
Cost:  $41.25 per 2.5 gallons - Governmental agency

  • Target weeds: Field bindweed, Canada thistle, Kudzu, Johnsongrass, Multiflora rose, Quackgrass
  • Active ingredient(s): Glyphosate
  • Acid equivalent: 3 lb/gal
  • Broadcast rate: 1-3 quarts per acre
  • Spot treatment: 0.7-0.13 oz/gal
  • Rainfast interval: 2 hours
  • Soil residual: N/A

 

Outrider   (Valent)   EPA Reg Number 59639-223

Cost:  $210.85 per 20 ounces - Private Johnson County landowner
Cost:  $280.80 per 20 ounces - Governmental agency

  • Target weeds: Johnsongrass
  • Active ingredient(s): Glyphosate
  • Acid equivalent: N/A
  • Broadcast rate: 1.33 ounces
  • Spot treatment: 0.36 grams per gallon
  • Rainfast interval: 4 hours
  • Soil residual: N/A
  • **must use surfactant**

PastureGard HL   (Dow AgroSciences)   EPA Reg Number 62719-477

Cost:  $68.50 per gallon - Private Johnson County landowner
Cost:  $90.99 per gallon - Governmental agency

  • Target weeds: Sericea lespedeza
  • Active ingredient(s): Triclopyr (ester), Fluroxypyr
  • Acid equivalent: Triclopyr - 1.5 lb/gal, Fluroxypyr - 0.5 lb/gal
  • Broadcast rate: 1-3 pints per acre
  • Spot treatment: 0.55-1.0 oz per gallon
  • Rainfast interval: 6 hours
  • Soil residual: 3-4 weeks

 

Range Star   (Agri Star)   EPA Reg Number 42750-55

Cost:  $18.90 per gallon, $43.50 per 2.5 gallons - Private Johnson County landowner
Cost:  $24.85 per gallon - Governmental agency

  • Target weeds: Field bindweed, Bull thistle, Bur ragweed, Canada thistle, Kudzu, Leafy spurge, Multiflora rose, Musk thistle, Pignut, Russian knapweed
  • Active ingredient(s): 2,4-D and Dicamba
  • Acid equivalent: 2,4-D - 2.87 lb/gal, Dicamba - 1 lb/gal
  • Broadcast rate: 1-2 quarts per acre
  • Spot treatment: 1 oz per gallon
  • Rainfast interval: 4 hours
  • Soil residual: 6-9 weeks

 

Remedy Ultra   (Dow AgroSciences)   EPA Reg Number 62719-552

Cost:  $36.50 per gallon - Private Johnson County landowner
Cost:  $48.30 per gallon - Governmental agency

  • Target weeds: Sericea lespedeza
  • Active ingredient(s): Triclopyr (ester)
  • Acid equivalent: 4 lbs/gal
  • Broadcast rate: 1-2 pints per acre
  • Spot treatment: 1-2 oz per gallon
  • Rainfast interval: 6-8 hours
  • Soil residual: 3-6 weeks

 

Tordon 22K   (Dow AgroSciences)   EPA Reg Number 62719-6

Cost:  $35.35 per gallon, $88.38 per 2.5 gallons - Private Johnson County landowner
Cost:  $45.30 per gallon, $113.23 per 2.5 gallons - Governmental agency

  • Target weeds: Field bindweed, Bull thistle, Bur ragweed, Canada thistle, Kudzu, Leafy spurge, Multiflora rose, Musk thistle, Pignut, Russian knapweed
  • Active ingredient(s): Picloram
  • Acid equivalent: 2 lbs/gal
  • Broadcast rate: 8-16 ounces per acre
  • Spot treatment: 0.10 - 0.75 oz per gallon
  • Rainfast interval: 6 hours
  • Soil residual: 6-12 weeks (may last longer than 52 weeks, under certain conditions)

 

 

 

Rental Equipment

Herbicide tank sprayers

Gas Powered Sprayer Rental
 

Please note: Sprayers will ONLY be rented for use on farmland located in Johnson County, Kansas.

  • Rental fee of $25 per day, plus a $100 refundable deposit, payable by cash or check only.

  • First come first serve, 913-715-8358

  • Requires a 2" ball hitch

  • 200 gallon tank covers 10 acres

  • No glyphosate allowed in tanks

Herbicide Application Reference Materials
 

 

 

Treatment Calendar

  • MARCH
    • Musk thistle
  • APRIL
    • Musk thistle
  • MAY
    • Musk thistle
    • Field bindweed
  • JUNE
    • Musk thistle (pull, cut or mow)
    • Field bindweed
    • Johnsongrass
    • Sericea lespedeza
  • JULY
    • Musk thistle (pull, cut or mow)
    • Field bindweed
    • Johnsongrass
    • Sericea lespedeza
  • AUGUST
    • Musk thistle (pull, cut or mow)
    • Field bindweed
    • Johnsongrass
    • Sericea lespedeza
  • SEPTEMBER
    • Musk thistle
    • Field bindweed
    • Johnsongrass
    • Sericea lespedeza
  • OCTOBER
    • Musk thistle
    • Field bindweed