Quinclorac 1.5L Herbicide

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Average Rating

3.5 out of 5 stars Rating: 3.7

3 Reviews | 7 Q&A

Product Overview

Quinclorac 1.5L is a liquid post-emergent herbicide that gives you unparalleled control over crabgrass and other related broadleaf weeds and grasses. Applicable in both residential and non-residential turfgrass, golf courses, and parks, the product's liquid formulation provides higher quality results when compared to dry formulations. Make sure to apply other herbicides to your property to control for weeds that the product does not cover.

The use of a methylated seed oil, such as Duo Stick Select is recommended to greatly enhance the effectiveness of the product.

For use in California: Biotypes of large and smooth crabgrass in California have shown varied response to this product. If control failure occurs following a full or split application, DO NOT reapply this product. Change to a herbicide with a different mode of action.

Features and Specs

Active Ingredient Dimethylamine salt of quinclorac 18.92%
Target pests Crabgrass (large & smooth), Foxtail (giant, green & yellow), Kikuyugrass, Signalgrass (broadleaf), Torpedograss, Bindweed (field), Clover (hop, red & white), Daisy (english), Dandelion, Dollarweed, Geranium (Carolina), Morningglory spp., Speedwell (common, slender & thymeleaf)
For use in Commercial & Residential Turf-grass, Golf Courses, Sod Farms, Military Institutions, Parks, and Athletic Fields
* See label for complete list
Application 1.45 oz. per 1,000 sq. ft.
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructions
Pet safe Yes, if used as directed on Label
Formulation Professional Product
NY - Restricted to Commercial Applicators
Shipping Weight 5.15 lbs
Manufacturer Quali-Pro (Mfg. Number: 83000011)
UPC 072693830165
EPA Registration 53883-336



Apply QUINCLORAC 1.5 L to actively growing weeds as post-emergence broadcast or spot sprays using the turf species, rate and growth stages.

For best results, weeds should not be under stress from lack of water, excessive water, low fertility, mowing shock, excessive hot or cold temperatures, or injury from other herbicide applications. To achieve consistent weed control, use methylated seed oil. Refer to Tables 2 and 3 for rates.

Adding adjuvants may cause slight leaf burn, but new growth is normal, and turf vigor is not reduced. The potential for leaf burn is increased when relative humidity and temperature are high. Additional stress from low mowing heights may also increase the possibility of turf injury. Chelated iron or sprayable soluble nitrogen fertilizer will reduce a slight yellowing that may occur on some turf-grass species. Not all chelated iron or sprayable nitrogen fertilizers are compatible with QUINCLORAC 1.5 L. Always perform a compatibility test to ensure proper mixing. See Compatibility Test For Mix Components section of label for directions.

Spot Applications:

Post-emergence spot applications may be made to susceptible weeds in turf-grass that is tolerant to QUINCLORAC 1.5 L (see Tables 1 and 2). Apply 1.45 fluid ounces of QUINCLORAC 1.5 L per 1000 square feet (0.75 lb ae/A) of treated area. Spray coverage should be uniform and complete. See Table 5 for spot spray mix instructions.

For use in New York State by spot treatment only.

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  • 5 of 5 Stars

    Works on Torpedograss

    By Dan on 08/09/2019

    Used it to get rid of Torpedograss in my lawn here in Florida. It works!

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    5 of 5 people found this review helpful

  • 5 of 5 Stars

    Control of existing torpedo grass/Northern Florida

    By Michael on 07/31/2020

    Tried for 3-4 years to kill torpedo grass in a zoysiagrass lawn. Used commercial spraying multiple times - at first sign/after growth/post emergence - with pretty much no results. Used this product as directed, and after 5-7 days torpedo grass had yellowed significantly. Reapplied 16 days later, as directed, and it stopped noticeable growth and basically killed off torpedo grass in the lawn.

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    4 of 4 people found this review helpful

  • 1 of 5 Stars

    Waste of time and money

    By Carolyn on 06/01/2018

    My husband is a farmer and knows how to apply chemicals. This stuff did nothing for our grassy weeds and we even got a little rain a couple of days after application to wash it in. Disappointed.

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    3 of 14 people found this review helpful

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Questions & Answers

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How many ounces of Quinclorac 1.5L should I use per gallon of water?

Quinclorac 1.5L

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12 of 86 people found this answer helpful

Do I have to add methylated seed oil to the Quincloracc 1.5L mixture? What application of seed oil be required?

Prime Source Duo Stick is the MSO type surfactant we would recommend for use with Quincorac 1.5L as well as any other quinclorac specific crabgrass control product.

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11 of 12 people found this answer helpful

Which of the Quincloracs are more effective in crabgrass, Quinclorac 1.5L or Quinclorac 75 DF?

They are comparable really just different formulations of the same active ingredient.

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9 of 9 people found this answer helpful

Will Quinclorac 1.5L Herbicide work in a hose end sprayer and at what rate is it applied?

You will use 1.45 oz of Quinclorac 1.5L per 1,000 sq. ft.

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8 of 18 people found this answer helpful

How many ounces of Quinclorac 1.5L should I use per gallon of water?

Quinclorac 1.5L

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6 of 61 people found this answer helpful

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Quinclorac 1.5L Herbicide 3.5 out of 5 stars Rating: 3.7 (3 Reviews / 7 Q&A)

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