Pesticide and Herbicide Application

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Integrated Pest Management

The City of Colorado Springs Parks Department follows an Integrated Pest Management (IPM) strategy that focuses on using a multi-faceted approach to better defend against pests. The objective is to control weeds in the City parks, open spaces, and public right of ways and insects that can be damaging to the urban tree canopy. The best weed control is a healthy, vigorously growing stand of turf grass that can out compete weeds.  We accomplish this by focusing on cultural practices such as mowing, fertilizing, irrigating, soil aeration/dethatching, topdressing, and overseeding.  Herbicides are then used, if needed, as a last line of defense.

The principles of our IPM procedures are as follows:

  1. Prevention- This is the most effective pest management strategy. By reducing the capacity of the ecosystem to support the target weed or pest populations through design and appropriate management, the opportunities for weed and pest establishment can be reduced or eliminated.
  2. Cultural- Cultural control is the use of management activities that prevent weeds and pests from developing due to enhancement of desired conditions.
  3. Mechanical - Mechanical control is accomplished by using physical methods or mechanical equipment to control weeds and pests. Mowing and hand pulling of weeds can be very effective.
  4. Biological - Biological controls include the introduction or enhancements of natural enemy populations to target weeds or pests.
  5. Chemical - When chemical control of weeds or pests is necessary General Use herbicides are applied. No Restricted Use pesticides will be used in park landscapes.

The majority of the herbicide applications that take place in our park system are performed by outside contractors.  All applicators are commercially certified and licensed through the Colorado Department of Agriculture and only apply products that are registered through the Environmental Protection Agency (EPA). Prior to the application being made the applicator will place yellow flags at conspicuous points of entry into the area indicating that an herbicide has been applied. When the herbicide is applied the applicators make spot treatments and only apply to areas containing target weeds. The area is safe to reenter once the product has dried.

For the State of Colorado Noxious Weed list visit:

Download Pesticide Applicator's Act

Pesticide Application Schedule

This schedule is updated on a weekly basis during the growing season. Always look for the Pesticide application flags that are placed out before application and left up for 24 hours after application.

If there are any questions regarding the application, please contact the Jarod Clayton at or call 719-385-6507.

Please note that this schedule is subject to change due to weather and scheduled activities.

May 6, 2022

Weather dependent

  • Location: Native hillside on south right of way Briargate Parkway between Austin Bluffs Pkwyand Brainard Dr
  • Product: T-zone/Milestone VM
  • Target: Invasive weeds
  • Active Ingredient: TZone:Triclopyr 7.72%, Sulfentrazone .66%, 2-4 D 29.32%, Dicamba 2.22% 
  • Milestone VM: Carboxylic acid 40.6%

May 5-6, 2022

Weather dependent

  • Location: Sondermann Park
  • General Area Treated: Elm Treatment area just west of mesa trail. (Area marked with yellow flags)
  • Product(s): Garlon 4A and Blue dye
  • Active Ingredient(s): triclopyr (3,5,6-trichloro-2- pyridinyloxyacetic acid, butoxyethyl ester
  • Target Pest: Siberian elm regrowth

Week of May 2, 2022

Weather dependent

  • Locations: South Shook’s Run, Fountain Park, Wildflower, Leon Young Shook’s, Memorial Park, Cheyenne Meadows, Legacy Loop Trailhead, Leon Young Sports Complex
  • General Area Treated: improved native grass
  • Product: Trimmec, Gallery
  • Active Ingredients: 2,4-D, mecoprop, dicamba, isoxaben
  • Target Pest: undesirable broadleaf weeds

Week of April 25, 2022

weather dependent

  • Location: Memorial Park (Peace Officers Memorial)
  • General Area Treated: turf grass areas and landscape beds
  • Product(s): Barricade, Pendulum, Cheetah Pro, and Horsepower
  • Active Ingredients: prodiamine,  pendimethalin, glufosinate-ammonium, MCPA, triclopyr, dicamba


  • Location: Danville, Portal, Garden Ranch, Dublin, Pinion Valley, Jackson, Carver, Penrose North and South, Village Green, Palmer Park, Discovery, Pike, Westmoor, Grant, Freemont, Keller
  • General Area Treated: skinned infields
  • Product: Esplanade
  • Active Ingredients: Indaziflam
  • Target pest: pre-emergent control of grassy and broadleaf weeds

Week of April 18, 2022

weather dependent

  • Location: Ford Frick, Cresta Medians, Centennial medians, Mountain Shadows,
  • General Area Treated: native grass areas
  • Product: Gallery, Trimmec
  • Active ingredients: isoxaben, 2,4-D, mecoprop, dicamba
  • Target pest: undesirable broadleaf weeds


  • Location: Buckskin Charlie
  • General Area Treated: native grass areas
  • Product: Dimension, T-Zone
  • Active ingredients: dithiopyr, triclopyr, sulfentrazone, 2,4-D, dicamba
  • Target pest: undesirable broadleaf weeds and grasses

Week of March 7, 2022

Application will take place as weather allows.

  • Location: John Venezia, Rampart Range, Ford Frick, Cottonwood, Dublin Park, Union Medians, Tomah, Freemont, Keystone, George Fellows, Frank Houck, University, Gardens Ranch
  • General Area Treated: Landscape beds
  • Product: BroadStar
  • Active Ingredient: flumioxazin
  • Target Pest: grasses and broadleaf weeds