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9 Best Granular Weed Killers 2025 in the United States

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Our Top Picks

#1

Winner

Scotts Halts Crabgrass & Grassy Weed Preventer, Pre-Emergent Weed Killer for Lawns, 10,000 sq. ft., 20.12 lbs.

Scotts Halts Crabgrass & Grassy Weed Preventer is designed to prevent a variety of lawn weeds, such as crabgrass, foxtail, spurge, barnyardgrass, Poa annua, henbit, moss (except in California), corn speedwell, and chickweed. It is a pre-emergent weed killer, meaning it stops weeds before they sprout, which is effective if applied in early spring or fall.

This product is versatile in terms of application timing, as its performance is not affected by rain, snow, or freezing weather once applied. It covers a substantial area, up to 10,000 sq. ft., making it suitable for larger lawns. The granule form simplifies application, allowing for even distribution across the lawn.

It is compatible with all grass types except Dichondra or Bentgrass, thus providing flexibility for various lawn compositions. While it prevents many types of weeds, it does not address post-emergent weeds that are already present. The product's longevity is promising, providing season-long prevention when applied correctly.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Application Timing
Applying this product in mid-April keeps lawns crabgrass-free until mid-summer, with a noticeable difference from untreated lawns.
Active Ingredients
Scott's concentrated Halts product works better than their mixed weed-and-feed options.
Safety and Environmental Impact
The product is safe to use, without adverse health effects experienced by some with other weed killers.
#2

DOW Snapshot 2.5 TG Granular Pre-emergent Herbicide

The DOW Snapshot 2.5 TG Granular Pre-emergent Herbicide is a highly effective solution for controlling a wide variety of weeds. One of its standout features is its ability to manage up to 111 different broadleaf and grassy weeds, making it a comprehensive choice for garden and lawn care. The product promises up to 6-8 months of control, which means fewer applications throughout the year, offering convenience and long-term results. The active ingredients, isoxaben and trifluralin, are well-regarded for their effectiveness in preventing weed emergence.

It is crucial to apply the granules before rainfall or irrigation for optimal performance, which might require some logistical planning. The coverage area is 1000 square feet per application, and the recommended application rate ranges from 2.3 to 4.6 lbs per 1000 square feet, providing flexibility based on the level of weed infestation. Weighing 50 pounds, the product can be a bit bulky, but it's designed for easy spreading.

Ideal for those looking to maintain weed-free lawns and gardens with minimal effort, this herbicide is a strong contender in the pre-emergent category.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Type of Weeds
Prevents grass effectively, unlike other brands, but requires careful application.
Application Timing
Best applied in spring and fall for optimal results.
Ease of Application
May be challenging to spread with a hand spreader; using the largest setting is recommended.
Longevity of Effect
Highly effective in hindering weed growth, lasting longer than other products like Preen.

Buying Guide for the Best Granular Weed Killers

Choosing the right granular weed killer can make a significant difference in maintaining a healthy and beautiful lawn or garden. Granular weed killers are easy to apply and can be very effective if you select the right product for your specific needs. Here are some key specifications to consider when choosing a granular weed killer, along with explanations to help you make an informed decision.
Type of WeedsDifferent weed killers are formulated to target specific types of weeds, such as broadleaf weeds, grassy weeds, or a combination of both. Identifying the types of weeds you are dealing with is crucial because using the wrong product may not effectively eliminate the weeds. If you have a mix of weed types, look for a broad-spectrum weed killer that targets multiple weed varieties.
Application TimingThe timing of application is important for the effectiveness of the weed killer. Some products are designed for pre-emergent use, meaning they prevent weed seeds from germinating, while others are post-emergent and target weeds that have already sprouted. If you are dealing with existing weeds, a post-emergent product is necessary. For preventing future weed growth, a pre-emergent product is ideal.
Coverage AreaThe coverage area indicates how much ground the product can treat. This is usually measured in square feet or square meters. Knowing the size of the area you need to treat will help you choose a product that provides adequate coverage without running out or having excess. Measure your lawn or garden area and compare it to the coverage information on the product label.
Active IngredientsThe active ingredients in a weed killer determine its effectiveness and the types of weeds it can control. Common active ingredients include glyphosate, 2,4-D, and dicamba. Understanding the active ingredients can help you choose a product that is safe for your lawn and effective against the weeds you are targeting. Research the active ingredients to ensure they are suitable for your specific needs.
Safety and Environmental ImpactConsider the safety of the product for humans, pets, and the environment. Some weed killers contain chemicals that can be harmful if not used properly. Look for products that are labeled as safe for use around children and pets, and consider environmentally friendly options if you are concerned about the impact on your garden's ecosystem. Always follow the manufacturer's safety instructions.
Ease of ApplicationGranular weed killers can vary in how easy they are to apply. Some come with built-in spreaders, while others may require a separate spreader. Consider how much effort you are willing to put into the application process. If you prefer a quick and easy application, look for products with user-friendly packaging and application methods.
Longevity of EffectThe longevity of the weed killer's effect refers to how long it will continue to prevent or kill weeds after application. Some products offer long-lasting protection for several months, while others may need to be reapplied more frequently. Consider how often you are willing to reapply the product and choose one that fits your maintenance schedule.

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