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10 Best Pre-Emergent Weed Controls 2025 in the United States

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Our Top Picks

#1

Winner

Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food, Pre-Emergent Weed Killer, Fertilizer, 15,000 sq. ft., 40.05 lb.

Rating
9.7
Chosen by1,450
Type of Weeds Controlled
Application Timing

Most important from
6537 reviews

Type of Weeds Controlled
This lawn food stopped the crabgrass from coming up and made my lawn look green and filled in within weeks.
Application Timing
It's crucial to apply this product early, ideally before temperatures reach 55-60 degrees, for the best results.

Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food is a versatile pre-emergent weed control solution that not only prevents a variety of weeds such as crabgrass, barnyard grass, foxtail, Poa annua, chickweed, and oxalis, but also nourishes your lawn. This dual-function product is designed for early spring application, ideally before the third or fourth mowing, which allows it to act before the weeds start to grow.

It's quite effective in ensuring a fast green-up after winter, making your lawn look healthy and lush quickly. One 40.05 lb. bag is ample, covering up to 15,000 sq. ft., making it suitable for larger yards. However, it's important to note that this product should not be used on Dichondra and Bentgrass lawns as it can be harmful to these grass types. Additionally, while the product is resilient to rain, snow, and freezing conditions post-application, users must be careful to apply it at the correct timing for optimal results.

In conclusion, Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food is a robust option for those looking to both prevent weeds and fertilize their lawn simultaneously, but caution is needed to ensure it's suitable for your specific grass type.

Rating
9.7
Chosen by1,450
Type of Weeds Controlled
Application Timing

Most important from
6537 reviews

Type of Weeds Controlled
This lawn food stopped the crabgrass from coming up and made my lawn look green and filled in within weeks.
Application Timing
It's crucial to apply this product early, ideally before temperatures reach 55-60 degrees, for the best results.
#2

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

Rating
9.4
Type of Weeds Controlled
Application Timing
Formulation

Most important from
8710 reviews

Type of Weeds Controlled
Crabgrass is best controlled before it germinates and next to impossible to control once it does.
Application Timing
Works well till mid-summer, but crabgrass started to invade in August, so consider a second round in early July.
Formulation
Big box stores carry mostly weed and feed products, but early spring is not ideal for fertilizer application, making this pure pre-emergent a better choice.
Safety and Environmental Impact
The product seems safe with no adverse health problems reported during application.

Scotts Halts Crabgrass & Grassy Weed Preventer is designed to help maintain a weed-free lawn by preventing the germination of several common weeds such as crabgrass, foxtail, spurge, and more. It is versatile in terms of timing since it can be applied either in early spring or fall, and it remains effective despite rain, snow, or freezing weather, making it reliable under various conditions.

Covering up to 10,000 sq. ft. with a 20.12 lb. bag, this product provides broad coverage for large lawns and is suitable for all grass types except Dichondra and Bentgrass. The granule form makes it easy to apply and ensures even distribution.

It is essential to note that this product is not effective on all types of weeds, and its impact on the environment should be considered, as with any chemical lawn treatment. Additionally, it is important to follow the application instructions carefully to avoid potential damage to the lawn or surrounding plants. With a specialized focus on preventing weed germination, Scotts Halts Crabgrass & Grassy Weed Preventer is a robust option for homeowners looking to maintain a pristine lawn through proactive prevention.

Rating
9.4
Type of Weeds Controlled
Application Timing
Formulation

Most important from
8710 reviews

Type of Weeds Controlled
Crabgrass is best controlled before it germinates and next to impossible to control once it does.
Application Timing
Works well till mid-summer, but crabgrass started to invade in August, so consider a second round in early July.
Formulation
Big box stores carry mostly weed and feed products, but early spring is not ideal for fertilizer application, making this pure pre-emergent a better choice.
Safety and Environmental Impact
The product seems safe with no adverse health problems reported during application.
#3

Scotts Turf Builder Bonus S Southern Weed & Feed2 - Weed Killer and Lawn Fertilizer, 10,000 sq. ft., 34.48 lbs.

The Scotts Turf Builder Bonus S Southern Weed & Feed2 is a dual-purpose product combining weed control and lawn fertilization, designed specifically for lawns in Southern regions. This product is capable of controlling a variety of weeds, including dollarweed, clover, dandelion, chickweed, and more, while simultaneously feeding the grass to promote strong, deep roots, and crowd out future weeds. It is suitable for use on specific types of grass, namely St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass, covering an area of 10,000 square feet per 34.48-pound bag.

One of its strengths is its dual functionality, making it a convenient option for those looking to both fertilize their lawn and control weeds in one go. However, it must be noted that the product requires immediate watering after application, which might be inconvenient for some users. Also, it is only effective when grass and weeds are actively growing, limiting its application timing.

This product is a solid choice for Southern homeowners looking to tackle weed issues while also nourishing their lawns, provided they adhere to specific application requirements.

Buying Guide for the Best Pre-Emergent Weed Controls

Choosing the right pre-emergent weed control is essential for maintaining a healthy and weed-free lawn or garden. Pre-emergent weed controls work by preventing weed seeds from germinating, which means they need to be applied before the weeds start to grow. To select the best product for your needs, you should consider several key specifications. Understanding these specifications will help you make an informed decision and ensure that your lawn or garden remains in top condition.
Type of Weeds ControlledThis specification indicates which types of weeds the product is effective against. It's important because different pre-emergent weed controls target different weed species. Some products are designed to control grassy weeds like crabgrass, while others are more effective against broadleaf weeds like dandelions. To navigate this spec, identify the common weeds in your area or the ones you have had issues with in the past. Choose a product that specifically lists those weeds on its label to ensure effective control.
Application TimingApplication timing refers to the best time of year to apply the pre-emergent weed control for optimal results. This is crucial because applying the product at the wrong time can render it ineffective. Generally, pre-emergent weed controls should be applied in early spring or fall, before the weed seeds begin to germinate. To pick the right timing for you, consider the climate in your region and the specific weeds you are targeting. Follow the product's instructions for the best results.
Duration of EffectivenessThis spec indicates how long the pre-emergent weed control will remain effective after application. It's important because it determines how often you will need to reapply the product to maintain weed control. Products can vary widely, with some lasting only a few months and others providing protection for up to a year. To navigate this spec, think about how much maintenance you are willing to do. If you prefer less frequent applications, choose a product with a longer duration of effectiveness.
FormulationFormulation refers to the physical form of the pre-emergent weed control, such as granules, liquid, or spray. This is important because different formulations have different application methods and coverage areas. Granules are often easier to apply over large areas, while liquids and sprays can provide more targeted control. To pick the right formulation for you, consider the size of the area you need to treat and your preferred application method. If you have a large lawn, granules might be more convenient, whereas a spray could be better for smaller, specific areas.
Safety and Environmental ImpactThis specification covers the safety of the product for humans, pets, and the environment. It's important because some pre-emergent weed controls can be harmful if not used properly. Look for products that are labeled as safe for use around children and pets if this is a concern for you. Additionally, consider the environmental impact of the product. Some pre-emergent weed controls are more eco-friendly than others. To navigate this spec, read the product labels and safety information carefully. Choose a product that aligns with your safety and environmental values.

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