Public Works

Phone: 913-715-8300

1800 W. Old Highway 56, Olathe, KS 66061

Treatment Calendar

Noxious weed herbicide application calendar

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

Sprayer Operating Guidelines

Herbicide Application Reference Materials

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)

Pasture Management

Pasture Management:

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

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.

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 grayi), Pignut (Hoffmannseggia densiflora), Musk (nodding) thistle* (Carduus nutans L.), Johnsongrass* (Sorghum halepense) and Sericea lespedeza* (Lespedeza cuneata).
*Found in Johnson County

Field bindweed