Dithiopyr L Herbicide

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Dithiopyr L Herbicide (generic Dimension EW herbicide) from Quali-Pro is a pre-emergent and post-emergent herbicide for control of both grassy and broadleaf weeds in established turf and ornamentals. Its low mix rate and non-staining formulation make it a great alternative to prodiamine

Quali-Pro Dithiopyr L Herbicide - 1 Gallon

Quali-Pro Dithiopyr L, with Dithiopyr 22 % is a generic of Dimension EW Herbicide. Dithiopyr L is a pyridine-based herbicide. It provides pre emergence and early post emergence control of crabgrass and other broadleaf weeds and annual grasses. It may be applied in non-cropland, established lawns, ornamental turf (including golf tees, fairways and roughs), commercial sod farms, industrial sites, container-grown ornamentals, field-grown ornamentals, and landscape ornamentals.

Dithiopyr L Herbicide & Crabgrass Control

As a pre-emergent and early post emergent herbicide, Dithiopyr L will control crabgrass that has emerged up to the tillering stage. The tillering stage is the start of crabgrass visibility with no more than 5 leaves per plant.

Applications of Dithiopyr L after the initiation of tillering would not result in suitable control. All other applications of this product for target weeds should be made preemergence (prior to germination of target weeds).

Quali-Pro Dithiopyr L is to be used before broadleaf weeds or grasses are established, (except for crabgrass prior to tillering stage of growth).

  • Pre-emergent and early post-emergent herbicide
  • low mix rate
  • non-staining formulation (excellent alternative to Surflan or Oryzalin)

Tank Mix

    • Dithiopyr L may be mixed with Quali-Pro Isoxaben 75 WG or Gallery 75 DF to control listed broad leaves in ornamental areas as a pre-emergent.
    • It may be tank mixed with glyphosate for undesirable vegetation in ornamental areas, providing post emergent control of vulnerable listed weeds. Since Glyphosate is a non-selective herbicide, do not use on desired vegetation.

The use of a nonionic surfactant may improve control.

More Information
Pro Tips Dithiopyr L works as a pre-emergent for annual weeds and pre-emergent and early post-emergent on crabgrass, so if you are a little late applying it don't fret. Dithiopyr L will still kill the crabgrass. This makes it a perfect choice in areas where the weather is unpredictable. Compare the ingredients to Dimension 2EW It's just as effective and and costs a little less.
Product Label Label
Target Pest

Dithiopyr L is used for the control of grassy and broadleaf weeds.

Grasses: barley, barnyardgrass, bluegrass, brome, crabgrass, crabgrass, large, crabgrass, smooth, crabgrass, southern, crowfootgrass ,dallisgrass (seedling) ,foxtail, goosegrass, Mary's grass oats, wild ryegrass (annual & perennial), sandbur, smutgrass

Broadleaf Weeds: bittercress, carpetweed, chickweed, dandelion, geranium, Carolina henbit, knotweed, prostrate lespedeza, common marestail ,medic, black, mulberry weed, mustard, and more listed weeds.

Active Ingredient (s) Dithiopyr 22%
For Use : Established lawns, Commercial sod farms, Non-cropland and Industrial Sites, Ornamental Turf (including Golf Course Fairways, Roughs, Tee Boxes), Container-grown Ornamentals, Field-grown Ornamentals, and Landscape Ornamentals.

Use Precautions:

  • Before using Dithiopyr L on newly established turf, the turf should have received at least two mowings following seeding, sodding or sprigging. The turf needs to be well established and not weakened from disease, pest or other turf injuries.
  • Allow 6 moths to sod before application of Dithiopyr L for best results.
Yield N/A

Crabgrass Control

  • For Coastal South : HI, FL, AL, GA, LA, MS, NC, SC, and TX apply between 0.37-0.55 oz per 100 sq. ft. or 1.0-1.5 pts per acre.
  • For South: AL, AR, GA, LA, MS, NC, NM, OK, SC,TN, TX : Apply 0.46-0.55 oz. per 1000 sq. ft. or 1.0-1.5 pts per acre.
  • Other States: See label for rates and timing of applications of other states

Do not apply more than 0.73 ounces of Dithiopyr 2L per 1,000 square feet per application. Do not apply more than 2.2 ounces of Dithiopyr 2L per 1,000 square feet per year using split or sequential applications.

Shipping Restrictions AK, CT, HI, NY
More Instructions
  • Do not apply to golf course putting greens
  • Do not apply within 3 months of harvesting sod
  • Do not apply more than 0.73 oz per 1,000 sq ft (2 pints per acre) per application
  • List label for more use restrictions
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