Pro Crabgrass & Grassy Weed Killer 32 oz - 18.92% Quinclorac

In this review the Pro Crabgrass & Grassy Weed Killer 32 oz is evaluated for homeowners and landscape pros who need a fast, residual solution for common grassy and broadleaf weeds. The bottom line: this concentrated 18.92% Quinclorac formula delivers visible knockdown on crabgrass and several broadleaf weeds while providing residual control that helps prevent quick reinfestation; it is best for users comfortable diluting and applying a professional-strength product. The reviewer found the product especially useful for larger lawn areas where persistent annual grassy weeds and clover are a recurring problem.

Key Features

• High Concentration: The 18.92% Quinclorac strength provides maximum power per application, reducing the need for frequent reapplications when used correctly.
• Residual Control: The formulation offers lingering activity that helps prevent weeds from reappearing for an extended period after treatment.
• Rapid Action: Visible results appear quickly on treated grasses and broadleaf weeds, making it easier to see treatment progress.
• Versatile Use: Suitable for use on lawns, landscapes and other turf areas where crabgrass, foxtail and several broadleaf weeds are present.
• Concentrated Bottle: The 32 oz size is convenient for mixing the required concentrations for moderate to large treatment areas without frequent repurchases.

Who It's For

This product is aimed at homeowners, gardeners and professional landscapers who need a professional-strength herbicide to control stubborn grassy weeds like crabgrass, foxtail and barnyardgrass, and want a product that also affects common broadleaf pests such as clover and dandelion. It is a good fit where residual control is desired to limit repeat treatments across lawn seasons.

It is not intended for casual users who prefer ready-to-use bottles or those uncomfortable mixing concentrated chemistry; careful adherence to the label and proper safety precautions are required. Those needing control of species not listed or seeking non-chemical options should consider alternatives.

Pros & Cons

Pros

• High Quinclorac concentration offers strong control of crabgrass and many grassy weeds.
• Provides residual suppression that reduces short-term reinfestation.
• Works on a range of common broadleaf weeds including clover and dandelion.

Cons

• Concentrate requires correct mixing and handling, which may deter casual users.
• Effectiveness can vary with weed species, growth stage and environmental conditions.

Specifications

Our Verdict

The 32 oz Pro Crabgrass & Grassy Weed Killer is a strong-value option for users who need a concentrated, fast-acting Quinclorac product with residual control. Buyers comfortable with mixing a concentrate and following label directions will find it effective against common grassy and broadleaf weeds and economical for treating larger areas.

Frequently Asked Questions

Will this control crabgrass?
Yes, the 18.92% Quinclorac formulation is designed to control crabgrass and several other annual grassy weeds when applied per label directions.

Is this ready to use or concentrate?
This is a concentrated 32 oz product that must be diluted according to the label before application.

Can it be used on all lawns?
It is intended for turf and landscape use, but effectiveness and safety depend on grass type and conditions, so follow label instructions and local guidance.