Top 5 Ranked Products
We analyzed millions of Amazon products to handpick the top recommendations just for you.

#1 Ranked
The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control - Covers up to 5,800 sq ft (18 lb)
Price: $43.88
Rating: ★★★★★
ASIN: B07NZ2BMMK
Score: 95%
Overview:
The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control is a specialized product designed to prevent the growth of various weeds, covering an area of up to 5,800 square feet. Formulated with 0.48% prodiamine, this product is effective for early spring and fall applications, targeting both grassy and broadleaf weeds such as crabgrass and poa annua. The DG Pro formulation enhances its efficacy, allowing for a higher concentration of particles per square inch, which contributes to superior performance. As a professional-grade solution, it is made in the USA, ensuring quality and reliability for users seeking to maintain their lawns and gardens.
While the Andersons Barricade offers robust weed prevention capabilities, it is essential to note that it does not eliminate existing weeds. This limitation may require users to combine it with other weed management strategies for optimal results. Additionally, the lack of customer reviews may indicate limited market feedback, which could be a consideration for potential buyers looking for proven efficacy.
Pros:
- Effective Prevention: Targets a wide range of weeds including crabgrass, ensuring a healthier lawn.
- Professional-Grade Formula: Contains 0.48% prodiamine, providing robust and reliable weed control.
- Large Coverage Area: Capable of treating up to 5,800 square feet, making it suitable for larger properties.
Cons:
- Limited User Feedback: Absence of reviews may deter potential buyers seeking proven results.
- Seasonal Application: Requires specific timing in early spring and fall, which may limit usability throughout the year.

#2 Ranked
Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz Specialty Herbicide, Light Tan
Price: $17.76
Rating: ★★★★☆
ASIN: B0052MZBYQ
Score: 88%
Overview:
The Southern Ag 006130 Atrazine St. Augustine Weed Killer is a specialized herbicide designed to effectively manage weeds in St. Augustine and Centipede grasses. With a treatment capacity of one quart covering up to 3,720 square feet, it provides a significant area of coverage, making it suitable for both residential and commercial lawn care. The product is packaged in a convenient 32oz bottle, ensuring ease of use and storage. Its formulation targets a variety of common weeds, which is essential for maintaining the health and aesthetics of lawns.
The herbicide's lightweight design and compact dimensions allow for easy handling and application. However, potential users should be aware that the product is specifically formulated for certain grass types, which may limit its versatility in broader lawn care applications. Additionally, the absence of customer reviews may raise concerns about its effectiveness and user satisfaction, as prospective buyers often rely on peer feedback to inform their purchasing decisions.
Pros:
- Coverage Area: Treats up to 3,720 sq ft, making it efficient for larger lawns.
- Targeted Use: Specifically controls weeds in St. Augustine and Centipede grasses, ensuring effective weed management.
- Compact Packaging: Lightweight and easy to handle, facilitating straightforward application.
Cons:
- Limited Grass Compatibility: Only effective on St. Augustine and Centipede grasses, which may not suit all lawns.
- Potential Environmental Concerns: As a chemical herbicide, it may raise concerns about environmental impact and safety.

#3 Ranked
Scotts WeedEx Prevent with Halts, Crabgrass Preventer, Pre-Emergent Grassy Weed Killer, 5,000 sq. ft., 10.06 lbs.
Price: $24.98
Rating: ★★★★☆
ASIN: B07KXLD8VL
Score: 86%
Overview:
Scotts WeedEx Prevent with Halts is a pre-emergent grassy weed killer designed to effectively prevent crabgrass and other common weeds from germinating in your lawn. With a coverage area of 5,000 square feet, this product is formulated for application in early spring or fall, ensuring season-long prevention of unwanted growth. It is particularly useful for homeowners looking to maintain a healthy lawn without the hassle of dealing with invasive weeds. However, it is important to note that this product should not be applied to certain grass types like Dichondra and Bentgrass.
The product's effectiveness lies in its ability to stop crabgrass before it starts, making it a proactive solution for lawn care. While it holds promise for weed management, the absence of customer reviews makes it challenging to gauge real-world performance and satisfaction. Nevertheless, for those seeking a reliable pre-emergent herbicide, Scotts WeedEx Prevent with Halts presents a viable option.
Pros:
- Season-Long Prevention: Provides extended protection against crabgrass and other weeds throughout the growing season.
- Wide Coverage: One bag can cover up to 5,000 square feet, making it suitable for medium to large lawns.
- Versatile Application: Can be applied in both spring and fall, allowing for flexibility in lawn care scheduling.
Cons:
- Limited Grass Compatibility: Not suitable for use on Dichondra and Bentgrass, which may restrict its use for some homeowners.
- Timing Sensitivity: Requires precise timing for application to be effective, which may be challenging for some users.

#4 Ranked
Scotts Halts Crabgrass & Grassy Weed Preventer, Pre-Emergent Weed Killer for Lawns, 5,000 sq. ft., 10.06 lbs. (2-Pack)
Price: $41.98
Rating: ★★★★☆
ASIN: B087QT2LFM
Score: 80%
Overview:
Scotts Halts Crabgrass & Grassy Weed Preventer is a pre-emergent weed killer designed to prevent the germination of various lawn weeds, ensuring a healthy and vibrant lawn throughout the season. This product effectively targets common weeds such as crabgrass, foxtail, and chickweed, making it a reliable choice for homeowners looking to maintain their lawns. With a coverage area of 5,000 square feet per 10.06 lb. bag, it provides ample supply for average-sized yards, and its formulation is suitable for all grass types, with some exceptions.
The application is straightforward, requiring use in early spring or fall on a dry lawn, and the performance remains unaffected by subsequent rain or snow. However, it is important to note that this product does not work on certain grass types like Dichondra or Bentgrass. Overall, Scotts Halts offers a convenient solution for weed prevention, but users should be aware of its limitations regarding specific grass types.
Pros:
- Effective Weed Prevention: Prevents a wide range of weeds from germinating, ensuring a healthier lawn.
- Broad Coverage: One bag covers up to 5,000 sq. ft., making it suitable for most residential lawns.
- Weather Resistant: Performance is not affected by rain, snow, or freezing weather after application.
Cons:
- Limited Grass Compatibility: Not suitable for use on Dichondra or Bentgrass, which may limit its applicability for some users.
- Timing Sensitivity: Requires precise timing for application in early spring or fall for optimal effectiveness.

#5 Ranked
Prodiamine 65 Wdg 5lbs Pre-emergent Grass Broadleaf Weeds ( Generic Barricade )
Price: $85.16
Rating: ★★★★☆
ASIN: B015BSNZP2
Score: 86%
Overview:
Prodiamine 65 WDG is a pre-emergent herbicide designed to control a wide range of grass and broadleaf weeds, making it a valuable tool for maintaining healthy turf and ornamental plants. Its effectiveness against various troublesome weeds such as crabgrass, chickweed, and foxtails makes it suitable for use in established turf-grasses, lawns, sod nurseries, and landscape ornamentals. With a shelf life of up to three years when stored properly, this product offers convenience and longevity for users.
The product is versatile in its application, targeting numerous pests and suitable for various environments, including Christmas tree farms and established perennials. However, it is important to note that it should not be used on golf course putting greens. The lack of reviews may indicate limited market exposure or newness, which could affect buyer confidence. Users should always refer to the product label for detailed application instructions and safety information to ensure optimal results.
Pros:
- Wide Range of Target Pests: Effectively controls numerous grass and broadleaf weeds, ensuring a healthier lawn.
- Versatile Application: Suitable for various settings, including lawns, nurseries, and ornamentals, enhancing its usability.
- Long Shelf Life: Can be stored for up to three years, providing value and convenience for users.
Cons:
- Limited Use Areas: Not suitable for golf course putting greens, which may restrict its market appeal.
- Complex Application Guidelines: Users must carefully follow label instructions, which may be overwhelming for some.
Product Information & Tips
Overview
St. Augustine grass is a popular warm-season turfgrass known for its lush appearance and ability to thrive in various climates, particularly in the southern United States. However, maintaining a healthy St. Augustine lawn requires proactive measures, including the use of pre-emergent herbicides to prevent weed growth. Selecting the best pre-emergent for this type of grass is crucial for ensuring optimal health and aesthetics of the lawn.
Pre-emergent herbicides work by creating a chemical barrier in the soil that inhibits the germination of weed seeds. Given the unique growth habits and environmental needs of St. Augustine grass, it is essential to choose a pre-emergent that is effective against common weeds while being safe for the grass itself. This analysis will highlight the key criteria for selecting the best pre-emergent products for St. Augustine grass.
Key Criteria
1. Effectiveness Against Target Weeds:
- It is important to choose a pre-emergent that is specifically formulated to combat the types of weeds prevalent in the area, such as crabgrass and other annual weeds. This ensures that the herbicide will provide the necessary protection for the lawn.
2. Safety for St. Augustine Grass:
- Not all pre-emergents are safe for use on St. Augustine grass. Selecting a product that is labeled as safe for this specific type of turf is crucial to prevent damage or stress to the grass, which can lead to thinning or discoloration.
3. Application Timing:
- The effectiveness of pre-emergents is highly dependent on proper application timing. Understanding the growth cycles of both St. Augustine grass and target weeds is essential to apply the herbicide at the right moment for maximum efficacy.
4. Longevity of Control:
- The duration of effectiveness is a critical factor. A pre-emergent that offers extended control will reduce the need for multiple applications throughout the growing season, saving time and resources for the homeowner.
5. Ease of Application:
- User-friendly products that are easy to apply and require minimal equipment are preferred by homeowners. This includes formulations that can be spread evenly across the lawn without special tools or techniques.
Frequently Asked Questions
Q1: What is the best time to apply pre-emergent for St. Augustine grass?
A1: The best time to apply pre-emergent is in early spring, typically when soil temperatures reach around 55°F, to prevent summer annual weeds.
Q2: Can I use the same pre-emergent every year?
A2: While some pre-emergents can be used annually, it is advisable to rotate products to prevent weed resistance and ensure continued effectiveness.
Q3: How do I know if a pre-emergent is safe for my St. Augustine grass?
A3: Always check the product label; it should explicitly state that it is safe for use on St. Augustine grass.
Q4: What are the common weeds that pre-emergents target?
A4: Common weeds include crabgrass, foxtail, and various broadleaf weeds that can invade St. Augustine lawns.
Q5: Is it necessary to water after applying pre-emergent?
A5: Yes, most pre-emergents require watering in to activate the herbicide and create the protective barrier in the soil.
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