10 Best Lawn Pre Emergents 2025 in the United States

Scotts Halts Crabgrass & Grassy Weed Preventer is designed to help you maintain a weed-free lawn by preventing the germination of various lawn weeds. This product excels in controlling a wide range of weeds such as crabgrass, foxtail, spurge, barnyardgrass, and others listed for use in early spring and fall. It is especially effective against moss (except in California), Poa annua, henbit, corn speedwell, and chickweed during the fall season.

Convenience is a key strength, as you can apply it to a dry lawn in either early spring or fall, and it remains effective despite rain, snow, or freezing weather following the application. This granule-based product covers up to 10,000 square feet, making it suitable for larger lawns. However, it is important to note that it is not safe for use on Dichondra or Bentgrass lawns.

Weighing 20.12 pounds, it is a manageable size for most users. Given its broad coverage, ease of application, and long-lasting effectiveness, this weed preventer is a solid choice for those looking to maintain a pristine lawn.

Scotts Turf Builder Bonus S Southern Weed & Feed2 is a combination weed killer and lawn fertilizer, designed for southern lawns. It effectively targets a variety of common weeds like dollarweed, clover, and dandelion while also feeding the grass to promote strong root development.

This product is formulated specifically for use on grasses such as St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass, ensuring safety for these types of desired plants. With a coverage of 10,000 sq. ft., its 34.48 lb. bag can treat large lawn areas. It's crucial to apply this product to a dry lawn when both grass and weeds are actively growing, followed by immediate watering to activate its ingredients.

Users should be cautious as it is only suitable for specific grass types and may not be effective or safe for use on other varieties. Its powder form might not be as convenient for everyone, and care must be taken to follow application instructions properly to avoid damaging the lawn.

Torocity Herbicide by Atticus is a versatile weed killer designed for both pre-emergent and post-emergent application, making it a flexible solution for maintaining a healthy lawn. It contains 40.0% mesotrione, the same active ingredient as the popular Tenacity, which has a long track record of effective weed control.

This product is suitable for a variety of turf grasses, including newly seeded Kentucky bluegrass, tall fescue, perennial ryegrass, and centipedegrass. It is not suitable for bentgrass, zoysiagrass, and actively growing Bermudagrass, so users need to check their lawn type before application. The herbicide is praised for its broad-spectrum control, tackling weeds like crabgrass, ground ivy, clover, oxalis, and dandelion.

The included easy-measure tool simplifies the mixing process, ensuring the correct dosage for effective application. Users must water the treated area within 10 days if there is no rainfall to activate the product. Available in a compact 8-ounce bottle, it covers approximately 1000 square feet, which might be limiting for larger lawns. This herbicide is ideal for homeowners looking to manage a variety of weeds in medium to small-sized lawns efficiently.