PBI Q4 Plus Herbicide

Description:
PBI Q4 Plus is a powerful post-emergent herbicide designed for selective broadleaf and grassy weed control in cool-season and warm-season turfgrass. With a robust combination of Quinclorac, Sulfentrazone, 2,4-D, and Dicamba, Q4 Plus delivers fast and effective control of tough weeds while minimizing turf injury.

Key Benefits:

• Broad-Spectrum Control – Targets a wide variety of broadleaf and grassy weeds, including crabgrass, foxtail, and nutsedge.

• Fast-Acting Formula – Visible results within days of application.

• Rainfast in 6 Hours – Ensures effectiveness even with unexpected rainfall.

• Flexible Application – Suitable for use in both cool- and warm-season grasses.

• Proven Turf Safety – Designed to minimize injury to established turfgrass.

Weeds Controlled:

Grassy Weeds:

• Crabgrass (Large & Smooth)

• Foxtail (Green, Yellow, Giant)

• Barnyardgrass

• Signalgrass

Broadleaf Weeds:

• Dandelion

• Clover

• Chickweed

• Thistle

• Spurge

• Wild Violet

• Ground Ivy

• Plantain

• Black Medic

• Oxalis

Sedge Weeds:

• Yellow Nutsedge

• Purple Nutsedge

Application Rates:

• Broadcast Application: 2.6–3.0 fl. oz. per 1,000 sq. ft. (equivalent to 7–8 pints per acre)

  • Spot Treatment: Mix 2.6–3.0 fl. oz. per gallon of water for localized control.

Best Practices:

• Apply when weeds are actively growing.

• Use a uniform spray pattern to ensure even coverage.

• Avoid mowing 24 hours before and after application for optimal uptake.

• Watering should be delayed for at least 6 hours post-application.

Restrictions & Safety Guidelines:

Do not apply to newly seeded turf until after the second mowing.
Avoid application during drought stress or extreme heat.

Do not exceed 2 applications per year in the same area.
Not for use on bentgrass greens, St. Augustinegrass, carpetgrass, or dichondra.
Keep away from water sources, as runoff may harm aquatic life.

Personal Protective Equipment (PPE):

• Wear long-sleeved shirts, gloves, and protective eyewear during application.

• Avoid inhalation of spray mist and wash hands thoroughly after handling.

• Store in original container in a cool, dry place away from food or animal feed.

It is a violation of Federal law to use this product in a manner inconsistent with its labeling.  Always consult the product label for complete application instructions and safety guidelines.  For the most accurate label information please refer to the manufacturer website.