10 Best Granular Weed Killer 2025 in the United States

The Scotts Turf Builder WinterGuard Fall Weed & Feed3 serves as both a weed killer and a fall fertilizer designed to help your lawn thrive by spring. It targets over 50 common lawn weeds like clover, dandelion, and plantain, making it very effective for broadleaf weed control. This product is meant to be applied to a moist lawn when temperatures are between 60°F and 90°F, ensuring the best results during the fall season when weeds are actively growing.

Covering up to 4,000 square feet with a single 11.43 lb. bag, it offers substantial coverage for medium-sized lawns. It's suitable for multiple grass types including Bahiagrass, Bermudagrass, Bluegrass, Centipedegrass, Fescue, Ryegrass, and Zoysiagrass. Users will find it relatively easy to apply, given its granular form which can be spread evenly with a fertilizer spreader.

It’s important to apply this product correctly to avoid harming desired plants and to ensure environmental safety. While it is effective in controlling a wide range of weeds, the effectiveness can be reduced if the application instructions are not followed precisely. Additionally, users should be mindful of its chemical nature and ensure it aligns with their environmental impact preferences.

Scotts Halts Crabgrass & Grassy Weed Preventer is a pre-emergent weed killer designed to stop the germination of various lawn weeds, including crabgrass, foxtail, spurge, and more. This product is highly effective for early spring and fall applications and continues to perform well even in unfavorable weather conditions like rain or freezing temperatures, providing a dependable solution for weed control throughout the season.

Covering up to 10,000 sq. ft. with a single 20.12 lb. bag, it offers extensive coverage suitable for large lawns. However, it's important to note that it is not suitable for Dichondra or Bentgrass lawns, which might be a limitation for some users. Additionally, while it is generally safe for most grass types, users should ensure careful application to avoid any accidental damage to desirable plants.

The ease of application is enhanced by its granular form, making it simpler to spread evenly across the lawn. This product is a solid choice for those looking to prevent a broad range of grassy weeds in their lawns efficiently.

Scotts WeedEx Prevent with Halts is a granular weed killer designed to stop crabgrass and other grassy weeds before they start. One of its major strengths is its effectiveness in preventing crabgrass all season long when applied in early spring. It can also be applied in the fall to combat winter weeds, offering versatile seasonal usage.

The product covers a substantial area of 5,000 square feet, making it suitable for medium to large lawns. However, it is important to note that it should not be applied to Dichondra and Bentgrass, which could limit its use for some users. Additionally, the active ingredient, Pendimethalin, is effective but does come with environmental considerations, as it may have impacts on non-target plants and ecosystems.

Careful application according to instructions is essential. The 10.06 lb. bag is relatively easy to handle and the granular form simplifies the application process. It's a practical option for homeowners looking to maintain their lawns free of troublesome weeds through proactive prevention.