10 Best Pre-Emergent Herbicides 2025 in the United States

BASF Drive XLR8 is a liquid herbicide featuring quinclorac as its active ingredient, known for effective post-emergent control of crabgrass and a variety of other grassy and broadleaf weeds. Unlike traditional pre-emergent herbicides that prevent weed seeds from sprouting, this product works after weeds have appeared, making it suitable if you need to tackle existing weed problems. Its water-based formulation helps the herbicide absorb quickly, with rainfast protection within an hour, so you don't have to worry much about rain washing it away soon after application. It offers up to 30 days of residual weed control, which means fewer repeat treatments over the month.

This product covers a full area, suitable for lawns, golf courses, and commercial turf, and it works on both warm- and cool-season grasses, adding flexibility for different soil types and climates. However, it requires careful handling—users must wear protective clothing and follow specific application rules, including spot treatments in some states like New York. While effective against a broad range of weeds, it is not designed to prevent weed seeds before they sprout, so it may need to be combined with a true pre-emergent herbicide if your goal is early weed prevention.

BASF Drive XLR8 is a reliable choice if you need a strong post-emergent grassy and broadleaf weed killer with good residual action, but it’s not a standalone pre-emergent solution and requires attention to safety instructions during use.

The Preen Extended Control Weed Preventer is designed to block weed growth for up to 6 months with a single application, making it a convenient choice for long-term garden maintenance. Its ability to be used around more than 600 types of perennials, groundcovers, shrubs, and trees adds to its versatility. However, it is not suitable for use on flower seeds, lawns, vegetable gardens, or any food-producing plants, which limits its application areas.

The 10-pound bag covers a substantial area of 1,630 square feet, making it efficient for larger garden spaces. The product is in granule form, which makes it easy to apply, especially when used with a refillable flip-top applicator. It is important to note that this product is not available for sale in New York, which could be a restriction for some users.

The safety and environmental impact are aspects to consider; it should be used strictly as directed to avoid any potential harm to non-target plants or the environment. Preen Extended Control Weed Preventer is well-suited for gardeners looking for a long-lasting weed control solution, particularly for non-food-producing plant areas.

Scotts Halts Crabgrass & Grassy Weed Preventer is a solid choice for those looking to maintain a weed-free lawn. One of its key strengths is its ability to prevent the germination of various common weeds such as crabgrass, foxtail, and spurge. With a coverage area of up to 10,000 square feet, a single 20.12 lb. bag offers great value, making it suitable for larger properties. The product is easy to apply, either in early spring or fall, and is effective regardless of weather changes after application, which adds to its convenience for users.

However, there are some considerations to keep in mind. While it is compatible with most grass types, it cannot be used on Dichondra or Bentgrass, which may limit its use for some homeowners. Additionally, it’s important to note that while the product is designed to be safe for lawns, users should still follow the application instructions carefully to minimize any potential environmental impact.

In terms of safety, generally, users report that the product is safe when used as directed, but there may be specific guidelines to follow, especially in areas with unique ecological concerns. The formulation is granulated, which is user-friendly, but requires proper distribution for optimal effectiveness.

Scotts Halts is particularly beneficial for those facing persistent weed problems in their lawns and for users looking for a reliable pre-emergent herbicide. It’s best suited for homeowners with common grass types who want an effective solution to keep their lawns looking pristine without the hassle of constant weeding.