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Public Works

Phone: 913-715-8300

1800 W. Old Highway 56, Olathe, KS 66061

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Identifying Noxious Weeds

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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

 

Johnsongrass
Johnsongrass

 

Kudzu

Kudzu

 

Leafy Spurge

Leafy spurge

 

Musk Thistle

Musk thistle

 

Pignut

Pignut

 

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.

 

 

Purchase Herbicides

Herbicides for purchase

General Information and Restrictions

Herbicides are sold at cost-share pricing for the specific use of noxious weed control. Products MUST be applied to land located in Johnson County.

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):

4 lb. Amine   (Corn Belt)      Full Description
EPA Reg Number: 11773-2

  • Cost:
    • $9.55 per gallon - Private Johnson Co. landowner
    • $21.75 per 2.5 gallons - Private Johnson Co. landowner
    • $32.28 per 2.5 gallons - Governmental agency

Escort XP    (Bayer Environmental Science)      Full Description
EPA Reg Number: 432-1549

  • Cost:
    • $14.40 per 8 oz - Private Johnson Co. landowner
    • $17.50 per 8 oz - Governmental agency

Makaze     (Loveland)    Full Description
EPA Reg Number: 34704-890

  • Cost:
    • $31.55 per 2.5 gallons - Private Johnson Co. landowner
    • $41.25 per 2.5 gallons - Governmental agency

PastureGard HL    (Dow AgroSciences)     Full Description

EPA Reg Number: 62719-477

  • Cost:
    • $68.50 per gallon - Private Johnson Co. landowner
    • $90.99 per gallon - Governmental agency

Range Star   (Agri Star)      Full Description

EPA Reg Number: 42750-55

  • Cost:
    •   $18.90 per gallon - Private Johnson Co. landowner
    •   $43.50 per 2.5 gallons - Private Johnson Co. landowner
    •   $24.85 per gallon - Governmental agency
    •   $62.13 per 2.5 gallons - Governmental agency

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

  • Cost:
    • $36.50 per gallon - Private Johnson Co. landowner
    • $48.30 per gallon - Governmental agency

Tordon 22K   (Dow AgroSciences)      Full Description
EPA Reg Number: 62719-552

  • Cost:
    • $35.35 per gallon - Private Johnson Co. landowner
    • $88.38 per 2.5 gallons - Private Johnson Co. landowner
    • $45.30 per gallon - Governmental agency
    • $113.23 per 2.5 gallons - Governmental agency

 

 

Rental Equipment

Herbicide tank sprayers

Gas Powered Sprayer Rental

  • 25/day + $100 deposit
  • 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

Month

Noxious Weed to Treat

MARCH

Musk thistle

APRIL

Musk thistle

MAY

Musk thistle
Field bindweed

JUNE

Musk thistle
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