10 Best Granular Weed Killer 2025 in the United States

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.

The Scotts Turf Builder Bonus S Southern Weed & FeedF2 is a specialized product designed for Southern lawns, particularly those in Florida. It effectively targets and kills various common weeds such as dollarweed, clover, and dandelion, while simultaneously fertilizing the grass to promote thick, healthy growth. This dual-action functionality is a significant strength, making lawn care more efficient by combining weed control and fertilization in one product. With a coverage area of 5,000 sq. ft., it is suitable for medium-sized lawns, and the granular form ensures even application.

It is crucial to apply this product when grass and weeds are actively growing and to water it immediately after application, which might be a bit demanding for some users. Another limitation is its specificity to certain grass types—St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass—making it unsuitable for other lawns. Moreover, its environmental impact needs careful consideration, as improper usage could affect non-target plants.

The product's ease of application is generally good, but precise timing and watering requirements could pose challenges. Scotts Turf Builder Bonus S Southern Weed & FeedF2 is excellent for users with the specified grass types in Florida looking for a combined weed control and lawn fertilization solution, provided they can adhere to the application guidelines.

Roundup Quick Pro is a granular weed killer that is mixed with water to create a liquid solution. It features two active ingredients: Glyphosate (73.3%) and Diquat (2.9%). These ingredients are effective in killing a wide variety of weeds, making it suitable for use in many areas with unwanted vegetation. The product is potent and can cover a large area, with one box making up to 5 gallons of solution by mixing 1.5 ounces of the product per gallon of water. This makes it cost-effective for larger properties or gardens with extensive weed problems.

It's important to apply it with care to avoid harming plants you want to keep, as it can damage any vegetation it comes into contact with. Safety precautions should be taken to prevent drift during application. Environmentally, Glyphosate has been a subject of controversy, and users might want to consider the impact of using such chemicals in their gardens.

On the positive side, the product is easy to apply with clear mixing instructions. It has been available for a long time, indicating its reliability and effectiveness for many users. In summary, Roundup Quick Pro is a powerful and easy-to-use weed killer for large areas, but users should be cautious about its broad-spectrum nature and potential environmental concerns.