Prime Source Quinclorac 1.5L Select

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Product Name Price/Ea. Quantity
Prime Source Quinclorac 1.5L Select ( 7.5 oz )
Prime Source Quinclorac 1.5L Select ( 7.5 oz )
  • Buy 2 for $19.50 each and save 19%
Out of stock
Please consider Quintessential Herbicide as an alternative.
Prime Source Quinclorac 1.5L Select ( 0.5 Gal )
Prime Source Quinclorac 1.5L Select ( 0.5 Gal )
Total: $0.00


  1. DIY One Gallon Power Sprayer (Rechargeable)
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  3. Empero Q-Pak 13.5 Gram
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  5. ShuBee Black Gauntlet Silver Edition Black Nitrile Gloves
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  • This item: Prime Source Quinclorac 1.5L Select $0.00
    Grouped product items
    Product Name Qty
    Prime Source Quinclorac 1.5L Select ( 7.5 oz )
    Out of stock
    • Buy 2 for $19.50 each and save 19%
    Prime Source Quinclorac 1.5L Select ( 0.5 Gal )
  • DIY One Gallon Power Sprayer (Rechargeable) $24.95
  • Empero Q-Pak $17.50
  • Black Nitrile 5 Mil Gloves Large Size (5 Pairs) $5.50

Product Information

Prime Source Quinclorac 1.5 L Select

Use Prime Source's Quinclorac 1.5 L Select to control various broadleaf and grassy weeds. This selective, post-emergent herbicide may be safely applied to cool types of turfs (residential and non-residential turfs). You can use Quinclorac 1.5 L Select from seven days before seeding to up to twenty-eight days after the selected weeds have emerged.

Top Benefits

  • Up to 90 day control
  • Works on both broadleaf and grassy weeds
  • Selective control means it doesn’t harm turf
  • Controls Crabgrass

Turf Tolerance (Established)

Highly TolerantModerately TolerantSusceptible
Bermudagrass, common1 Bluegrass, annual Bluegrass, Kentucky Buffalograss Fescue, tall Ryegrass, annual Ryegrass, perenniaBentgrass, creeping1 Bermudagrass, hybrid1 Bluegrass, rough (Poa trivialis) Fescue, Chewing’s Fescue, fine2 Fescue, hard Fescue, red Paspalum, seashoreBahiagrass Bentgrass, colonial Bentgrass, seaside Centipedegrass Dichondra St. Augustinegrass

1Yellowing that occurs on these species can be reduced by the addition of chelated iron or sprayable soluble nitrogen fertilizer (see Application Information and Addition of Adjuvants).

2 Apply Quinclorac 1.5L Select herbicide to fine fescue only when it is part of a blend.

DO NOT use on golf course greens and collars.

Consult Table 4. Seeding/Overseeding/Sprigging Timing Chart for this situation.

Manufacturer: Prime Source

Application-Quinclorac 1.5 L Select Herbicide Rate

  • Broadcast Applications: 64 fl. ozs. of product per acre or 1.45 fl. ozs. per 1,000 sq. ft
  • Spot Applications: Apply 1.45 fl. ozs. of Quinclorac 1.5L Select per 1,000 sq. ft. (0.75 lb. AI/A) of treated area.
  • For best results add methylated seed oil at 0.55 fl. oz. per 1,000 sq. ft
  • See label for complete instructions.
Packaging 7.5 oz and 1/2 Gallon
Product Label Label
More PDF's Sales Sheet
Target Pest
  • Broadleaf Weeds:
  • Bindweed, field
  • Clover, hop
  • Clover, red
  • Clover, white
  • Daisy, English2,5
  • Dandelion, common2
  • Dollarweed
  • Geranium, Carolina
  • Medic, black
  • Morningglory spp.
  • Speedwell, common
  • Speedwell, slender
  • Speedwell, thymeleaf
  • Violet, wild
  • Grassy Weeds:
  • Barnyardgrass
  • Crabgrass, large1,4
  • Crabgrass, smooth1,4
  • Foxtail, giant1
  • Foxtail, green1
  • Foxtail, yellow1
  • Kikuyugrass2,3
  • Signalgrass, broadleaf
  • Torpedograss3

1 Under certain conditions, application of Quinclorac 1.5L Select made to annual grasses at 2 to 4 tiller may not provide complete control. A sequential application will be required for grass control in these situations. Optimum control is achieved when applications of Quinclorac 1.5L Select + methylated seed oil are applied either before second tiller or as weed grasses mature.

2 Tank mix partner or sequential application required.

3 Make 2 sequential applications of 1.0 fl. oz. (0.51 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. and an additional sequential application up to 0.90 fl. oz. (0.46 lb. AI/A) of Quinclorac 1.5L Select per 1,000 sq. ft. at 14- to 21-day intervals.

4 Biotypes of large and smooth crabgrass in California have shown varied response to Quinclorac 1.5L Select. If control failure occurs following a full or split application, DO NOT reapply Quinclorac 1.5L Select. Change to a herbicide with a different mode of action.

5 NOT FOR USE to control this weed in California.

Active Ingredient (s) Quinclorac . . . . . . . 18.92%
For Use :
  • Residential Turfgrass
  • Non-Residential Turfgrass
Yield N/A
Mixture|Application N/A
Shipping Restrictions AK,AZ,HI,WY,CT,NY

Product Videos

Prime Source Quinclorac 1.5L
Crabgrass Control & Prevention
What is a Surfactant?
Properly Mixing Herbicides

Frequently Asked Questions


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