10 Best Post Emergent Crabgrass Killers 2025 in the United States

Roundup For Lawns₂ Concentrate is a liquid weed killer designed specifically for northern grasses like Kentucky Bluegrass, Ryegrass, and Fescues. It effectively targets a wide range of common weeds, including crabgrass, dandelion, and poison ivy, providing up to three months of weed control when used as directed. Since it starts working immediately and becomes rainproof within three hours, it offers good convenience and reliability in various weather conditions.

Being a concentrate, it requires mixing with water before application, which might be slightly less convenient than ready-to-use sprays but allows for coverage of up to 5,000 square feet. The product is selective, meaning it’s safe for use on listed lawn grasses without harming them, which is important to protect your healthy turf. The label booklet should be carefully checked to ensure compatibility with your specific grass type.

The formula is strong and targets roots for long-lasting control. Users should handle it with care and follow instructions closely to minimize any safety or environmental risks. This product is a solid choice for homeowners looking to manage crabgrass and other tough weeds in northern lawns, offering effective and lasting results with a bit of preparation needed for application.

The Spectracide 1.33 Gallon Weed Stop For Lawns Plus Crabgrass Killer AccuShot Refill is a versatile weed killer designed for lawn use. One of its primary strengths is its fast-acting formula, which promises visible results in as little as five hours. It targets over 470 types of weeds, including common nuisances like dandelions, chickweed, clover, crabgrass, and yellow nutsedge, making it a comprehensive solution for various weed problems. Additionally, it kills weeds down to the root, ensuring more effective and long-lasting results without harming the lawn when used as directed.

This product is a liquid formulation, making it easy to apply with the AccuShot Sprayer, which simplifies the process and improves precision. It's particularly convenient as a refill option, which can save time and reduce waste. Users should be aware of its suitability for specific weed types and lawn conditions by consulting the product label.

Weighing in at 11.58 pounds and covering a wide range of weed types, this product is ideal for homeowners seeking an efficient and broad-spectrum weed control solution without damaging their lawns.

BASF Drive XLR8 Crabgrass Killer uses quinclorac as its active ingredient, effectively controlling both grassy and broadleaf weeds such as crabgrass, dandelions, and clover. This makes it a versatile choice for various weed problems in lawns and turf. Its water-based liquid formulation helps the herbicide absorb quickly, enabling faster results compared to some other products. Additionally, it offers 30-day residual control, meaning it continues working for about a month and reduces the frequency of applications needed. The product also becomes rainfast within an hour, so light rain won’t wash it away soon after application.

It can be used on different types of turf, including warm-season and cool-season grasses, making it suitable for homeowners, golf courses, and commercial properties. Users should exercise caution and wear protective clothing like gloves and long sleeves during application, following label instructions closely to avoid environmental damage. In some states, such as New York, it is restricted to spot treatment rather than full lawn spraying.

Because it is a strong and effective herbicide with specific application rules, it is better suited for those comfortable following detailed guidelines. Its concentrated form requires mixing before use, which might be challenging for first-time users but allows customization of the amount applied. For those seeking a reliable product to control crabgrass and other common weeds with lasting effects and who are willing to follow safety precautions, BASF Drive XLR8 is a solid option.