Best Weed Killer For Crab Grass (2024 Updated)

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As a homeowner, you understand the importance of maintaining a beautiful and healthy lawn. However, crab grass can be a persistent and stubborn weed that can quickly take over your yard. This is why it's important to find the best weed killer for crab grass to keep your lawn looking its best.

When searching for the best weed killer for crab grass, there are a few key points to consider. First, you should look for a product that contains a selective herbicide specifically designed to target crab grass. This means that the herbicide will only kill the crab grass and not harm your desirable grass.

Second, you should consider the formulation of the weed killer. Some products come in a liquid form, while others are granular. Liquid weed killers are typically faster-acting, while granular products are more long-lasting.

Third, you should consider the safety of the product. Look for a weed killer that is safe for use around pets and children and won't harm the environment.

Fourth, you should consider the coverage area of the product. Make sure that the weed killer you choose can cover the size of your lawn.

Finally, you should consider the price of the product. While you don't want to skimp on quality, you also don't want to overspend on a weed killer that won't work effectively.

By considering these key points, you can find the best weed killer for crab grass and keep your lawn looking healthy and beautiful all season long.

10 Best Weed Killer For Crab Grass

1. Agralawn Crabgrass Killer, Fast-Acting 2 Lb Bottle, Naturally Safer Weed Killer

Agralawn Crabgrass Killer is a fast-acting and naturally safer weed killer that comes in a 2 lb bottle. It is designed to target and eliminate crabgrass and other weeds from St. Augustine, Common Bermuda, Bahia, and Centipede grasses. When used properly, this product will cause very little reaction or yellowing to the above listed grass types, making it a safe option for lawn care.

One of the key features of Agralawn Crabgrass Killer is its ability to be taken in through the leaves to wipe out weeds and roots. This post-emergent product is effective in controlling crabgrass, dandelions, clover, and other broadleaf weeds. This makes it a great option for those who are looking for an effective and easy-to-use weed killer.

Another benefit of Agralawn Crabgrass Killer is that it qualifies for exemption from EPA registration under the Federal Insecticide, Fungicide and Rodenticide Act, Section 25(b) rule. This means that it is a safer option for both the environment and the user, as it does not contain harmful chemicals that can negatively impact the ecosystem.

One of the biggest concerns homeowners have when using weed killers is whether or not it will harm their grass. Agralawn Crabgrass Killer was specifically designed to not harm St. Augustine grass, making it a great option for those who have this type of grass in their lawn. It is important to note, however, that this product may cause some yellowing or reaction in other grass types, so it is important to use it properly and follow the instructions carefully.

In conclusion, Agralawn Crabgrass Killer is a safe and effective option for those who are looking for a fast-acting and naturally safer weed killer. Its ability to target and eliminate crabgrass and other broadleaf weeds while not harming St. Augustine grass makes it a great option for lawn care. Plus, its exemption from EPA registration means that it is a safer option for both the environment and the user.

2. Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate 40 Ounces, 6 Pack

Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate 40 Ounces, 6 Pack is a powerful herbicide that is specially formulated to control and eliminate weeds in lawns without harming the grass. This product is designed to target broadleaf and grassy weeds, including crabgrass, dandelions, chickweed, clover, and yellow nutsedge, among others.

This herbicide is highly effective and can kill over 470 different types of weeds. It is an essential product for any homeowner who wants to maintain a beautiful and healthy lawn. The product comes in a 40-ounce bottle that can treat up to 6,250 square feet of lawn.

One of the most significant advantages of using Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate is that it is rainproof. This means that once the product is applied, rainfall or watering three hours after application will not wash away its effectiveness. This is crucial as it ensures that the herbicide remains active and continues to kill weeds even in adverse weather.

The product is easy to use and apply, and it can be used as a spot treatment or as a broadcast application. When using this herbicide, it is essential to follow the instructions and guidelines provided on the product label carefully. This ensures that the right amount of herbicide is applied to the lawn, and the product is used safely.

One of the main benefits of Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate is that it is highly selective. This means that it targets weeds specifically and does not harm the lawn. This is crucial as it ensures that the lawn remains healthy and lush while the weeds are eliminated.

Another significant advantage of this herbicide is that it can kill crabgrass effectively. Crabgrass is one of the most challenging weeds to control, and it can quickly spread across the lawn. Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate can help prevent the spread of crabgrass and eliminate it from the lawn entirely.

In conclusion, Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate 40 Ounces, 6 Pack is an essential product for homeowners who want to maintain a beautiful and healthy lawn. It is highly effective in killing weeds, including crabgrass, without harming the grass. The product is rainproof and easy to use, and it can treat up to 6,250 square feet of lawn. When using this herbicide, it is essential to follow the instructions and guidelines provided on the product label carefully.

3. Spectracide Weed Stop For Lawns + Crabgrass Killer Concentrate, 32-Oz, 6-Pk, Clear

Spectracide Weed Stop For Lawns + Crabgrass Killer Concentrate is a highly effective solution for controlling weeds in lawns without damaging the grass. This product comes in a 32-oz bottle, and the six-pack bundle ensures that you have enough supply to cover a larger area.

This weed killer is specially formulated to eliminate crabgrass, which is one of the most stubborn weeds that can invade your lawn. The best time to apply this product is when you first notice crabgrass growth in your lawn. This will help prevent it from spreading and causing more damage to your lawn.

Apart from crabgrass, Spectracide Weed Stop For Lawns + Crabgrass Killer Concentrate is also effective against more than 470 other types of weeds, including broadleaf and grassy weeds such as dandelion, chickweed, clover, and yellow nutsedge. For a complete list of weeds that this product can control, refer to the product label.

One of the most significant advantages of this product is that it does not harm the lawn when used as directed. This means that you can eliminate weeds without damaging the grass and other vegetation in your lawn. Spectracide Weed Stop For Lawns + Crabgrass Killer Concentrate targets only the weeds, leaving your lawn looking healthy and vibrant.

This weed killer is also rainproof, which means that it will not wash away in the rain or when you water your lawn three hours after application. This feature ensures that the product remains effective for an extended period, providing long-lasting weed control.

The Quickflip hose-end sprayer makes it easy to apply the product to your lawn. The sprayer attaches quickly to your garden hose and activates at the flip of a switch, allowing you to apply the product evenly and precisely.

In summary, Spectracide Weed Stop For Lawns + Crabgrass Killer Concentrate is an excellent solution for controlling weeds in your lawn. It is specially formulated to target weeds and not harm the grass, making it a safe and effective way to keep your lawn weed-free. With its rainproof formula and easy-to-use Quickflip hose-end sprayer, this product provides long-lasting weed control and convenience.

4. Basf Drive Xlr8 Herbicide Crabgrass Killer – 1 Jug (1/2 Gal.)

BASF Drive XLR8 Herbicide Crabgrass Killer is a highly effective solution for controlling crabgrass and other stubborn weeds. This product is designed using the latest technology to provide unsurpassed crabgrass control, making it a popular choice among homeowners and lawn care professionals alike.

One of the key features of Drive XLR8 herbicide is its ability to deliver outstanding residual control for up to 30 to 45 days with just a single application. This means that users can enjoy long-lasting results, without the need for frequent reapplication.

In addition to its excellent residual control, Drive XLR8 herbicide is also rain fast quicker (in less than an hour), ensuring that it remains effective even in wet conditions. This is a particularly important feature for those who live in areas with high levels of rainfall or humidity.

Drive XLR8 herbicide is formulated using a proprietary, water-based formulation, which enhances its ability to control a wide range of weeds. This product is particularly effective against Bindweed, Clover, Crabgrass, Dandelion, Dollarweed, Foxtail, Kikuyugrass, Signalgrass, Speedwell, Torpedograss, several broadleaves (clover, speedwell) and numerous other troublesome weeds.

The effectiveness of Drive XLR8 herbicide is due in part to its ability to penetrate deep into the soil, where it targets the roots of weeds and prevents them from regrowing. This makes it an ideal solution for those who are looking for a long-term, sustainable approach to weed control.

Overall, BASF Drive XLR8 Herbicide Crabgrass Killer is a highly effective solution for controlling crabgrass and other stubborn weeds. Its long-lasting residual control, rainfastness, and ability to target a wide range of weeds make it a popular choice among homeowners and lawn care professionals alike. Whether you're looking to maintain a pristine lawn or tackle a stubborn weed problem, Drive XLR8 herbicide is an excellent choice.

5. Gordon's Trimec Crabgrass Plus Lawn Weed Killer Concentrate, 1 Gallon, 761200

GORDON'S Trimec Crabgrass Plus Lawn Weed Killer Concentrate is an effective herbicide that is designed to control emerged grassy weeds such as crabgrass, foxtail, and signalgrass. It is a concentrated formulation that features a 3-way herbicide blend, making it one of the most potent weed killers in the market.

This herbicide is designed to control more than 200 common broadleaf weeds, including dandelions and plantain, as listed. It is an ideal solution for homeowners, landscapers, and groundskeepers who are looking for a reliable and effective way to keep their lawns free from weeds.

One of the key benefits of using GORDON'S Trimec Crabgrass Plus Lawn Weed Killer Concentrate is its concentrated formulation. This means that users can dilute the product to the desired strength, making it cost-effective and efficient. The concentrated formula also makes it easy to apply, as it can be mixed with water and sprayed onto the target weeds using a backpack sprayer or similar equipment.

The 3-way herbicide blend in this product is another key feature that makes it highly effective. The blend contains three active ingredients, each with a different mode of action. This ensures that the product can control a wide range of weeds, including those that are resistant to other herbicides.

GORDON'S Trimec Crabgrass Plus Lawn Weed Killer Concentrate is also highly selective, meaning that it targets only the weeds and leaves the grass unharmed. This makes it an ideal solution for lawns that have been infested with weeds, as it can be used without damaging the grass.

This herbicide is also highly versatile, as it can be used on both warm-season and cool-season grasses. It is also rainfast within hours of application, meaning that users can apply it even if rain is expected. The product is also non-flammable, making it safe to use around homes and other buildings.

In conclusion, GORDON'S Trimec Crabgrass Plus Lawn Weed Killer Concentrate is a highly effective herbicide that can control a wide range of grassy and broadleaf weeds. Its concentrated formulation, 3-way herbicide blend, selectivity, and versatility make it an ideal solution for homeowners, landscapers, and groundskeepers who are looking for a reliable and effective way to keep their lawns free from weeds.

6. Bonide Bnd60400 – Crabgrass And Weed Preventer, Dura Turf Pre-Emergent Control For Lawn And Garden Beds (9.5 Lb.)

Bonide (BND60400) Crabgrass and Weed Preventer is a highly effective pre-emergent weed control product for lawns and ornamental garden beds. This ready-to-use weed preventer is easy to apply and can keep weeds and crabgrass at bay for the entire season.

This product is specially formulated to provide up to four months of crabgrass control and can be applied up to four weeks later than other crabgrass preventers. It is an ideal solution for those looking for a long-lasting, easy-to-use weed control product that provides excellent results.

The Bonide (BND60400) Crabgrass and Weed Preventer can cover up to 5,000 square feet of turfgrass, making it ideal for use on both cool-season and warm-season turfgrass. It is recommended to apply the granular product as directed on the label to achieve optimal results.

This weed killer and prevention technique can help clear out, control, or suppress over twenty different weeds, including foxtail, chickweed, annual bluegrass, barnyard grass, goosegrass, spurge, and more. It is an effective solution to prevent the growth of weeds and crabgrass in lawns and gardens.

The Bonide (BND60400) Crabgrass and Weed Preventer is designed for use on lawns and ornamentals as directed on the bag for the best results. However, it should not be applied to fruit or vegetable plants, and people or pets should not be allowed to enter the treated area until the dust has settled.

In conclusion, the Bonide (BND60400) Crabgrass and Weed Preventer is an excellent solution for those looking for a highly effective, easy-to-use weed control product. It provides long-lasting results and can keep weeds and crabgrass out of lawns and gardens for the entire season.

7. Roundup For Lawns Crabgrass Destroyer1 – 1 Gal. Tough Weed Killer For Kentucky Bluegrass, Fine Fescue, Perennial Ryegrass, And Tall Fescue. Kills Crabgrass.

Roundup for Lawns Crabgrass Destroyer1 is a highly effective weed killer that is designed to eliminate the toughest crabgrass and grassy weeds without harming lawns. This product is specifically formulated for Northern lawns, including Kentucky bluegrass, fine fescue, perennial ryegrass, and tall fescue.

When applied as directed, this weed killer is safe for use on lawns and will not cause any damage. The active ingredients in Roundup for Lawns Crabgrass Destroyer1 work by targeting the weeds at their roots, preventing them from growing back and spreading throughout the lawn.

One of the key benefits of using Roundup for Lawns Crabgrass Destroyer1 is that it is highly effective against crabgrass, which is one of the most difficult weeds to eliminate. This product is designed to kill crabgrass at all stages of growth, from seedlings to mature plants.

Another benefit of Roundup for Lawns Crabgrass Destroyer1 is that it is easy to apply. Simply mix the product with water and apply it to your lawn using a sprayer or watering can. The weeds will turn white within 4-7 days of application, which is a clear sign that the product is working.

This weed killer can be applied at any time before seeding, including the day of seeding. This makes it a convenient option for homeowners who are looking to establish a new lawn or who are trying to maintain an existing lawn.

Overall, Roundup for Lawns Crabgrass Destroyer1 is a highly effective and safe weed killer that is designed specifically for Northern lawns. It is tough on weeds but won't harm your lawn when used as directed. If you're looking for a reliable and easy-to-use weed killer, this product is definitely worth considering.

8. Green Gobbler 20% Vinegar Weed & Grass Killer – 1 Gal Concentrate – Natural & Glyphosate Free Herbcide

Green Gobbler 20% Vinegar Weed & Grass Killer is a natural and organic solution to eliminating weeds and grasses without the use of toxic chemicals. This product is made straight from corn grown in the USA and is OMRI listed as a certified weed killer for organic use.

With a powerful formula containing 20% acetic acid, Green Gobbler can eliminate any type of weed in just a matter of hours. Expect full desiccation in less than 24 hours. This product can be used on crabgrass, dandelions, clover weeds, white clover, moss, and more.

Unlike traditional herbicides that contain cancer-causing chemicals, Green Gobbler is glyphosate-free and made strictly from ethanol distilled from corn grain. The 20% formula is four times stronger than traditional table vinegar, making it a powerful and effective solution for weed and grass elimination.

Green Gobbler is safe to use anywhere, making it perfect for residential, commercial, industrial, and agricultural use. It can be applied anywhere weeds and grasses are not desired, including driveways, sidewalks, concrete, mulch beds, pavers, flower beds, parking lots, farmlands, barns, and more. It comes ready to use right out of the container, so no mixing or measuring is required.

The makers of Green Gobbler stand behind their product and offer a 30-day money-back guarantee. If customers are not pleased with the results, they can call or email with their order number for a full reimbursement. The company values its customers and strives to provide effective and safe solutions for weed and grass elimination.

In summary, Green Gobbler 20% Vinegar Weed & Grass Killer is a certified organic solution for eliminating weeds and grasses without the use of toxic chemicals. Its powerful formula and safe application make it an ideal solution for residential, commercial, industrial, and agricultural use. The 30-day money-back guarantee ensures customer satisfaction and confidence in the product.

9. Bayer Advanced 704115a Crabgrass Killer For Lawns, 32 Oz, Ready-To-Spray

Bayer Advanced 704115A Crabgrass Killer for Lawns is a highly effective solution to get rid of crabgrass and other listed grass weeds. This product is available in a 32 oz. ready-to-spray container that is easy to use, and it can cover up to 5,000 square feet of lawn area. This means it is an ideal solution for homeowners and lawn care professionals looking to maintain a healthy and weed-free lawn.

This Crabgrass Killer is designed to kill crabgrass and other listed grass weeds to the root, ensuring that they do not grow back. The product is formulated to work on Kentucky Bluegrass, Perennial Ryegrass, and Fescue lawns without harming the grass. This feature is a significant advantage as it eliminates the need for homeowners to worry about their lawn's health while they try to get rid of weeds.

The convenient sprayer included with the product connects to a garden hose, making it easy for anyone to apply the Crabgrass Killer. Once connected, the sprayer automatically dispenses the killer, allowing users to apply it evenly across their lawn. This feature makes it easy for homeowners to apply the product without needing any specialized equipment or tools.

One of the most significant benefits of Bayer Advanced 704115A Crabgrass Killer for Lawns is its rainproof protection. Within an hour of application, the product becomes rainproof, meaning that it will not wash away with the rain. This feature ensures that the product remains effective, even after a sudden downpour. Hence, homeowners do not need to worry about reapplying the product every time it rains.

In summary, Bayer Advanced 704115A Crabgrass Killer for Lawns is an excellent solution for anyone looking to get rid of crabgrass and other listed grass weeds from their lawn. It is easy to apply, rainproof, and does not harm your lawn. This product is suitable for use on Kentucky Bluegrass, Perennial Ryegrass, and Fescue lawns, and it can cover up to 5,000 square feet of area. Homeowners can trust Bayer Advanced 704115A Crabgrass Killer for Lawns to help them maintain a healthy and weed-free lawn.

Best Weed Killer For Crab Grass FAQs

Can a pre-emergent weed killer prevent crab grass from growing?

Yes, a pre-emergent weed killer can prevent crab grass from growing. Pre-emergent weed killers work by creating a barrier on the soil surface that prevents weed seeds from germinating and growing. Crab grass, like other annual weeds, emerges from seeds that lie dormant in the soil. By applying a pre-emergent herbicide before crab grass seeds germinate, you can prevent the weed from growing. Timing is crucial when using pre-emergent herbicides, and they should be applied in early spring before soil temperatures reach 55 degrees Fahrenheit. It's also important to follow the manufacturer's label instructions carefully, as overuse or misuse of these herbicides can harm desirable plants and cause environmental damage. Additionally, pre-emergent weed killers should not be used on areas where you plan to grow new plants or seeds, as they can prevent the growth of desired plants as well as weeds.

How do I choose the best weed killer for crab grass?

When choosing the best weed killer for crab grass, it's important to consider the active ingredients and the application method. Look for products that contain herbicides specifically designed to target crab grass, such as quinclorac or fenoxaprop-p-ethyl. These ingredients are effective at killing crab grass without harming your lawn.

Consider the application method that works best for you. Some weed killers come in a spray bottle, while others come in granular form. Sprays are useful for spot treatments, while granular formulations are better suited for larger areas.

It's also important to consider the timing of the application. Crab grass is best treated in the early summer when it's actively growing. Be sure to follow the instructions on the product label, as over-application or improper use can damage your lawn.

Lastly, consider the environmental impact of the product you choose. Look for weed killers that are labeled as "eco-friendly" or "organic" and avoid those that contain harmful chemicals that can harm your lawn or the environment.

How long does it take for a weed killer to kill crab grass?

The time it takes for a weed killer to kill crab grass depends on several factors, such as the specific herbicide used, the size and growth stage of the crab grass, and the environmental conditions. Some herbicides can provide visible results within hours, while others may take several days or weeks to kill the plant completely.

Pre-emergent herbicides are designed to prevent crab grass from germinating, while post-emergent herbicides target the plant after it has already grown. It is important to follow the instructions on the herbicide label carefully, as using too much or too little can affect its effectiveness.

Environmental factors such as temperature, humidity, and soil moisture can also impact how quickly a weed killer works. In general, warmer temperatures and higher humidity can accelerate the process, while dry or cold conditions may slow it down.

Overall, it is best to consult with a professional or refer to the product label for specific information on the timing and effectiveness of a weed killer for crab grass.

Is it safe to use a weed killer on crab grass in my lawn?

It is generally safe to use a weed killer on crab grass in your lawn, as long as you follow the instructions on the product label and take necessary precautions. It is important to choose a selective herbicide that targets crab grass specifically, without harming other desirable grasses in your lawn. Glyphosate-based herbicides are effective against crab grass but should be used with caution, as they can also kill other plants and may harm the environment. Pre-emergent herbicides are also an effective option for preventing crab grass from germinating in the first place. However, it is important to note that all herbicides can be harmful if not used properly, and it is essential to wear protective gear and keep children and pets away from treated areas until the product has dried. It is also recommended to avoid using herbicides in areas close to water sources or on windy days to prevent contamination.

What are the most effective weed killers for crab grass?

The most effective weed killers for crab grass are pre-emergent herbicides that prevent the growth of the weed. These herbicides should be applied in early spring before crab grass seeds germinate. Some commonly used pre-emergent herbicides include Prodiamine, Dithiopyr, and Pendimethalin.

Post-emergent herbicides can also be used to kill established crab grass plants. These herbicides are applied directly to the leaves of the plant and work by disrupting the growth and metabolism of the weed. Some commonly used post-emergent herbicides for crab grass include Quinclorac, Fenoxaprop, and Sulfentrazone.

It is important to follow the instructions on the herbicide label carefully to ensure effective treatment and prevent damage to surrounding plants. It is also recommended to apply herbicides on a calm day to prevent drift and to wear protective clothing and gloves.

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