10 Best Crabgrass Killers and Preventers 2021 – Review and Buying Guide

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Crabgrass killers and preventers have gained wide popularity over the years due to their ability to eradicate a diverse range of weeds along with crabgrass. Similarly, the high toxicity, better dilution potential, selectivity, temperature tolerance, and weather resistance are some significant attributes of the chemical that greatly impact its performance.

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Amazon's Choice
Quali-Pro Prodiamine, Pre-Emergent Herbicide, 5 lbs, Yellow Granules
Quali-Pro Prodiamine, Pre-Emergent Herbicide, 5 lbs, Yellow Granules
Good Choice
Scotts 49915 Crabgrass, Pre Emergent Control for Lawns, Halts Crabgrass & Grassy...
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Tenacity Turf Herbicide - 8 ounces
Tenacity Turf Herbicide - 8 ounces
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Green Gobbler 20% Vinegar Weed & Grass Killer | Natural and Organic | 1 Gallon...
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This article encompasses the 10 best crabgrass killers and preventers based on the above, mentioned characteristics.

Crabgrass Killers and Preventers Top Picks

1. Scotts Halts Crabgrass Preventer

Scotts Halts Crabgrass Preventer

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Scotts Halts Crabgrass Preventer is one of the most cost-efficient yet performance-oriented products available around the market. The pesticide is known for its high potency and does not disappoint you in terms of weeds and crabgrass elimination. Integrated with the best ingredients, it ensures utmost efficiency and keeps your lawn free of unwanted pests and weeds.

In addition to this, the item is perfect for a diverse variety of users and is not at all harmful to the useful vegetative cover in your garden. Hence, you can use it without worrying about damage to the local flora. The herbicide belongs to the category of pre-emergent tools that should be applied before the growth of the pest in the desired location.

The manufacturer recommends using it twice a year; once in spring and the second time in fall to prevent the outgrowth of both summer and winter weeds and crabgrass. We also observed that the compound does wonders on the dry land and did not require any water for binding with the soil particles.

This assured us regarding the weather-resistant nature of the specified material and protected it against rain and winds. As mentioned earlier, Scotts Halts is a pre-emergent weedicide and will not work on mature crabgrass. However, if you’re looking for something that will prevent the potential germination of crabgrass seed, this formula is our ultimate recommendation.

Pros
  • Time-efficient
  • Long-lasting
  • Large coverage area
Cons
  • Not for existing weeds

 

Scotts Halts Crabgrass Preventer is a highly efficient crabgrass preventer that is highly popular among consumers. The enhanced demand is attributed to its ability to work in diverse climatic conditions. This ensures that the concentrate could last for a long-time with better soil absorption than others of its kind. Moreover, the high potency allows for dilution which increases the quantity of the concentrate and allows you to cover a large area using a single packet.

2. Ortho Weed Crabgrass Control

Ortho Weed Crabgrass Control

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Ortho Weed Crabgrass Control is another highly efficient product included in the list of best crabgrass killers and preventers. Unlike its previously mentioned counterparts, the herbicide falls under the category of post-emergent items and works perfectly well on a wide variety of weeds including crabgrass.

Designed especially for broadleaf weeds, the concentrate is safe for use on zoysiagrass and does not disappoint you in any aspect. During the trial session, we also noticed the unrivaled efficiency of the formula throughout the year. Moreover, it is not prone to damage due to water and extreme environmental conditions and can bind perfectly with soil particles.

Improved adsorption abilities of the substance are associated with its long retention at the site of application. It is advised to apply the chemical on the site of infestation when the crabgrass is small and actively growing. This will kill the already existing species and will prevent the growth of future generations for some time.

Thereby relieving you from the concerns of repeated application of the compound. Since Ortho weed is a liquid weedicide, we recommend using a spraying nozzle or attachment with the unit for hassle-free application and extraordinary results. Thus, if you are looking for a budget-friendly crabgrass killer you might want to consider Ortho Weedkiller.

Pros
  • Rainproof in 1 hour
  • Highly potent
  • Versatile
Cons
  • Lingering chemical smell

 

Ortho Weed Crabgrass Control is second to none in terms of performance and efficiency. This highly efficient pesticide is known for its remarkable time efficiency, which can kill a diverse range of pesticides within 24 hours. Moreover, the material displays outstanding results under high-temperature conditions and should be applied in early spring or summer for unparalleled outcomes.

3. Tenacity Turf Herbicide

Tenacity Turf Herbicide

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Tenacity Turf Herbicide is yet another powerful herbicide that performs exceptionally well and is a tough competitor to some of the top-notch crabgrass killers available in the market. Belonging to the class of pre-emergent materials, the compound is well-known for its ability to prevent the growth of potential invaders including crabgrass.

However, to our surprise, the formula displayed equal efficiency in killing already existing crabgrass and associated weeds and kept our lawn safe from unwanted pests for a long time. Another advantage of the substance is its improved adsorption abilities which allow it to bind perfectly well with soil particles and work on the roots of the crabgrass.

The material works by drying the pest and causing it to wither over time. Moreover, due to its excellent composition, it prevents the re-growth of weeds for around a year after a single application and relieves you from the concerns of repeated applications. Along with this, the improved sorption prevents the runoff of the weed killer with water and winds.

Hence, increasing its retention time at the site of application. The primary ingredient used in the manufacturing of the spray is Mesotrione, which is renowned for its high toxicity and performs extremely well in removing a wide variety of weeds including dandelions, clover, and crabgrass.

Pros
  • 8 years shelf life
  • Better soil retention
  • Improved penetration
Cons
  • Expensive

 

Tenacity Turf Herbicide is highly popular among consumers of diverse backgrounds and works perfectly fine in multiple climatic conditions. It involves the combination of active and inactive ingredients to ensure the efficiency of the unit without impacting the surrounding useful vegetation cover. However, the tool is expensive and you might have to spend a few dollars to get the task done.

4. Green Gobbler Weed & Grass Killer

Green Gobbler Weed & Grass Killer

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Green Gobbler Weed & Grass Killer is a well-known organic compound that is manufactured using all-natural materials and is not harmful to the environment. It is not associated with eutrophication or other environmentally harmful activities. But you must be extremely careful while applying the substance to your gardens since it is non-selective in nature and is equally harmful to your garden plants and flowers.

It is advised to apply the material only to the zone of infestation and prevent sprinkling it over other plants. We highly admire the inclusion of the spray nozzle and head along with the package. This enables a hassle-free application of the liquid herbicide and can be attached to the bottle after the removal of the lid.

Similarly, the use of corn as the main ingredient does not only contribute to the eradication of existing crabgrass but also offers sufficient nutrients to increase soil fertility. Besides this, the absence of glyphosate which is a highly toxic element protects your pets and children against harm and toxicity.

The compound is also certified by OMRI as an organic product and is highly recommended if you have young children or pets at home or in nearby areas. Additionally, its working mechanism involves the use of strong vinegar and distilled corn grain for the production of ethanol which is highly toxic to a variety of pests.

Pros
  • Time-efficient
  • Better shelf-life
  • Multi-purpose weedicide
Cons
  • Non-selective

 

Green Gobbler Weed & Grass Killer is a fast-acting item that is capable of removing all types of weeds and pests in the minimum possible time. It removes the crabgrass by drying it out within 24 hours and then leading it to wither over time. Lastly, it is available with a 30-day money-back guarantee and does not disappoint you at all.

5. Southern Ag Weed Killer

Southern Ag Weed Killer

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Southern Ag Weed Killer performs exceptionally well on broad-leaf weeds and ensures utmost efficiency throughout the year. Its ability to kill multiple weeds including crabgrass makes it best among its industrial counterparts. The chemical involves the use of 4% atrazine along with other active ingredients that are highly potent in nature and display unrivaled performance.

Belonging to the category of post-emergent weedicide, it works well on existing weeds in your garden and backyard. This coupled with the ability of the substance to stop the growth of new generations adds five stars to its performance. The concentrate can be effortlessly diluted in the water to increase the quantity and can be applied over the entire field using a single bottle.

However, we advise avoiding the use of spraying hose for pesticide application. Instead, you can sprinkle it over the desired location for the best results. Along with this, the enhanced retention is attributed to the perfect binding of the material to the soil particles which prevents it from getting washed away with rain or fast winds.

Similarly, the improved retention also contributes to long-term efficiency and prevents the regrowth of crabgrass and dandelions for a long time. We also appreciate the budget-friendliness of the product which makes it suitable for consumers of diverse financial backgrounds. Thus, if you are one of those that want a performance-oriented product at a reasonable price range, this herbicide is my ultimate recommendation.

Pros
  • Multipurpose item
  • Remarkable active ingredients
  • Inexpensive
Cons
  • Incompatible with spraying hose

 

Southern Ag Weed Killer is one of the best crabgrass killers and preventers available in the market. This low-maintenance formula does not require much effort on the consumer’s part and allows you to achieve a weed-free garden within hours. Time efficiency is another strong aspect of the elements and allows it to eradicate the toughest of weeds within 2 to 3 days.

6. Quali-Pro Prodiamine Herbicide

Quali-Pro Prodiamine Herbicide

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Quali-Pro Prodiamine Herbicide is highly popular among consumers of diverse backgrounds these days and is associated with high market demand. Manufactured specifically to prevent the growth of crabgrass in diverse climatic conditions, the pesticide is the first choice for most users. The reason for this is its amplified efficiency in restricting the germination of weeds which makes it an excellent pre-emergent substance.

In addition to this, the versatility of the specified weed killer is evident from its ability to kill a wide variety of pests in your surroundings. Thereby leaving crabgrass and a dandelion-free garden. Similarly, the flexible application timings, phenomenon, and temperature make it ideal for use all around the globe.

You can also sprinkle it over the infested region in any season depending on your convenience. The presence of prodiamine which is a highly potent active ingredient in the compound ensures better dilution of the concentrate. Hence, increasing its amount and featuring a large coverage area.

Despite its increased potency, the formula is not harmful to other plants in the environment due to its selective nature. Therefore, it can be used without worrying about damaging the local flora in your region. We highly recommend using it in the early spring when the temperature is not extremely high to achieve the maximum output.

Pros
  • Flexible timings
  • One time application
  • Selective in nature
Cons
  • Might take some time

 

Quali-Pro Prodiamine Herbicide is a highly effective crabgrass preventer available at an extremely reasonable price across the market. Featuring annual application, the item can prevent the growth of newly emerging weeds within 2 to 3 days. Furthermore, its ability to kill harmful grasses without impacting the useful plants is admired by the majority of users including us. Therefore, it is highly recommended for those that prefer pre-emergence weedicides with little maintenance.

7. Spectracide Weed & Grass Killer

Spectracide Weed & Grass Killer

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Spectracide Weed & Grass Killer is the last product included in the list of best crabgrass killers and preventers. Belonging to the category of non-selective items, the item is perfect for killing a variety of weeds. However, you must be extremely careful while using it. Since it will not only harm the weeds and crabgrass but will also equally affect the local flora.

The substance works by drying out the weeds and withering them out, eventually leading to their death during the phenomenon. As mentioned earlier, due to the non-selective nature of the weed killer, we advise applying it in patches over the affected area. This will not only resolve your problem but will also contribute to the minimization of the damage incurred to the useful vegetative cover.

But, if a large portion of your garden is infested with weeds, we highly recommend spraying the chemical all over the garden and then replanting everything. Along with this, time efficiency is the highlighting attribute of the component and improves its performance to a great extent. After application, we observed the crabgrass turning brown within three hours and were highly impressed by the output delivered by the system.

Furthermore, better sorption abilities contribute to the weather resistance of the material and increase its soil retention time. Thus, during rain and wind, it does not get washed away and can remain for a long time at the site of application where it acts on the roots of the target species and eradicates it in the minimum time.

Pros
  • Rainproof nature
  • No need for a tank sprayer
  • Time-efficient
Cons
  • Non-selective

 

Spectracide Weed & Grass Killer is renowned for its outstanding abilities and budget-friendliness. The material belongs to the class of post-emergent pesticides and is non-selective in nature. High potency is another significant attribute of the system and increases its efficiency to a great extent. Last but not least, you do not need a spraying tank for the purpose of application.

What to Consider While Purchasing the Best Crabgrass Killers and Preventers

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Multiple factors account for the efficiency and extraordinary performance of the product and must be carefully considered before purchase. In the case of best crabgrass killers and preventers potency of the compound, versatility, effectiveness, surrounding climatic conditions, and type of the killer are various factors that contribute significantly to the performance. All these are discussed below in detail.

Potency

The term potency refers to the toxicity and concentration of the substance. Highly potent and concentrated solutions can be effortlessly diluted with water to kill a wide variety of pests using a single bottle. This leads to the achievement of maximum results on a large coverage area along with the reduction in cost associated with the purchase of additional batches. Thus, next time you are out to buy a crabgrass killer for your garden, remember to have a look at its potency for unparalleled results.

Versatility

Next up, versatility is also of great significance and must never be overlooked. It is associated with the selective and non-selective weed eradication abilities of the element. Most of the weedicides available in the market are capable of killing more than 250 species of weeds including crabgrass and dandelion and display outstanding outcomes. It is advised to select a multi-purpose tool that can kill multiple substances within a single application to save time and money.

Effectiveness

The ingredients used in the production of a pesticide have a great impact on its performance and efficiency. The active ingredients make up a great amount of the actual herbicide and impact the efficiency of the tool to a great extent. Similarly, certain compounds have better sorption abilities and can bind effortlessly with soil particles.

This allows them to remain at the site of application for a long time and prevents it from getting washed away with rain or wind. Substances possessing better retention time and weather resistance characteristics have a better potential for weed removal as compared to their other counterparts.

Climatic Conditions

Among the climatic conditions, temperature acts as a limiting factor and can either make or break the deal. There are certain crabgrass preventers that must be applied at specific temperatures in a specific season to achieve the desired results. However, others can be applied throughout the year without worrying about performance inefficiency.

Mostly, colder climates tend to affect the performance of the herbicide and thus, we recommend using it above 50 degrees Fahrenheit to achieve the maximum output. Hence, you should carefully analyze the climatic conditions in your region before purchasing an object for yourself. This will increase your chances of success tremendously in the minimum time.

Frequently Asked Questions

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When is the best time to apply crabgrass pre-emergent herbicide?

Pre-emergent herbicides are those that should be applied on the land before the outgrowth of weeds. These act as preventers and are usually applied when the soil temperature rises to around 50 degrees Fahrenheit usually in spring or early summer. Some pre-emergent units are also capable of killing the weeds however, you might have to apply it more than once to achieve the best results.

Can heavy rain damage the pre-emergent weedicide?

No, rain and other environmental factors do not negatively impact the performance of the pre-emergent weedicides. Instead, they act as triggers to activate the actual potential of these objects, The rain carries the formula into the soil and lets it bind with the soil molecules. Thereby increasing its retention time and improving its efficiency.

Does a crabgrass killer work?

Yes, a crabgrass killer works wonders if suitable environmental conditions are offered. They include the appropriate temperature, high potency, improved weather resistance, high retention time, and much more. You should carefully analyze all these characteristics carefully before making a decision regarding the purchase of a crabgrass preventer.

Wrapping Up

Best crabgrass killers and preventers offer both pre-emergent and post-emergent options that can be selected at the consumer’s convenience. These components are characterized by high potency, enhanced toxicity, versatility, amplified temperature tolerance, and improved weather resistance. Based on these factors, the following are our top three recommendations.

Scotts Halts Crabgrass Preventer for its high potency, large coverage area, better soil absorption, amplified soil retention, and cost-effectiveness.

Southern Ag Weed Killer because of its post-emergent nature, long-term efficiency, remarkable active ingredients, versatility, and time conservation.

Spectracide Weed & Grass Killer due to its rainproof abilities, increased toxicity, enhanced sorption, time-efficiency, and limited requirement for a tank spray.

Thus, they are ideal for those that prefer the best performance at a low price.

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