Steadfast® Q

  • Herbicide

Delivers Effective Postemergence Contact

Whether you’re protecting conventional or glyphosate-tolerant corn hybrids, Steadfast® Q herbicide delivers effective postemergence contact plus residual weed control.

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Contact Control With Systemic Activity Stops Weeds in Their Tracks

Get powerful contact control of grass and broadleaf weeds, including barnyardgrass, fall panicum, foxtails, morningglory, sandbur, Italian ryegrass, broadleaf signalgrass, pigweed and other tough emerged weeds.

Residual Control Keeps Crops Clean Until Harvest

Steadfast® Q features longer-lasting residual control to see corn through to a clean harvest.

Built-In Safener Adds Flexibility

The “Q” stands for built-in safener technology that provides the flexibility to confidently apply Steadfast® Q under diverse weather conditions, across more hybrids and with a wide range of adjuvants.

Controlled weeds

This product delivers effective weed control against the following:


  • Amaranth, Powell (Amaranthus powellii)
  • Barnyard Grass
  • Burcucumber
  • Cereal, Volunteer
  • Crabgrass, Large (Digitaria adscendens)
  • Cupgrass, Woolly (Eriochloa villosa)
  • Dandelion
  • Foxtail
  • Goosegrass
  • Johnsongrass
  • Morningglory, Annual (Ipomoea spp.)
  • Muhly
  • Mustard, Wild (Brassica campestris)
  • Pigweed, Redroot (Amaranthus retroflexus)
  • Pigweed, Smooth (Amaranthus chlorostachys)
  • Quackgrass
  • Ryegrass
  • Shattercane
  • Sunflower, Common, or Wild (Helianthus annuus)
  • Witchgrass

Refer to the Product Label for complete product efficacy information.

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State Registrations

  • Registered
  • Unregistered

Technical Specifications

  • Active Ingredient


  • Approved Use

    Steadfast® Q herbicide is a water-dispersible granule used at the rate of 1.5 ounces per acre for selective postemergence grass and broadleaf weed control in field corn.

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Tell me more

Steadfast® Q is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions.