Best Fertilizer to Kill Weeds in Lawn – What You Need to Know Now

Struggling with pesky weeds ruining your lawn? The right fertilizer can effectively eliminate them while nourishing your grass.

Weed control fertilizers like Scotts Turf Builder Weed & Feed and BioAdvanced 3-in-1 Weed and Feed serve a dual purpose. They not only kill weeds but also promote healthy grass growth. These products simplify lawn care, making it efficient and hassle-free.

In our full review, we break down performance, durability, and more to help you choose the perfect solution for a lush, weed-free lawn.

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best fertilizer to kill weeds in lawn

Scotts Turf Builder Weed & Feed

#1 CHOICE

Scotts Turf Builder Weed & Feed3, Weed Killer Plus Lawn Fertilizer, Controls Dandelion and Clover, 5,000 sq. ft., 14.29 lbs.

The adjustable valve sets Scotts Turf Builder Weed & Feed3 apart, providing users with customizable application rates for optimal lawn care. This product combines a powerful weed killer with a nutrient-rich fertilizer, ensuring a thick, lush lawn while effectively controlling over 50 listed weeds. It comes in a 14.29 lb. bag, covering up to 5,000 sq. ft., making it suitable for medium to large lawns.

Key Advantages

  • Constructed with high-quality granules that enhance distribution and efficacy.
  • 316-grade stainless steel components in the spreader resist corrosion, ensuring durability.
  • Effective against common weeds like clover and dandelion, promoting healthy grass growth.

Limitations

  • Not compatible with St. Augustinegrass, Dichondra, Lippia, Carpetgrass, and Bentgrass lawns, which may limit its use for some homeowners.

Best for outdoor enthusiasts needing a reliable solution for weed control and lawn fertilization, Scotts Turf Builder Weed & Feed3 offers a comprehensive approach to lawn care. Its dual-action formula not only eliminates existing weeds but also nourishes grass to prevent future growth, making it an essential tool for maintaining a vibrant lawn.

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Scotts Liquid Turf Builder Weed Control

#2 CHOICE

Scotts Liquid Turf Builder with Plus 2 Weed Control, Liquid Weed Killer and Fertilizer, 32 fl. oz.

The adjustable valve sets Scotts Liquid Turf Builder with Plus 2 Weed Control apart from its competitors. This innovative feature allows users to customize the flow rate, ensuring precise application and maximizing coverage. The product comes in a 32 fl. oz. container, designed for efficient use on various lawn types, including Bluegrass, Fescue, Ryegrass, Bahiagrass, Common Bermudagrass, Centipedegrass, and Zoysiagrass.

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Key Advantages

  • The use of **316-grade stainless steel** in the adjustable valve resists corrosion, ensuring durability and longevity.

Limitations

  • Not compatible with certain other lawn care products that require different application methods.

This product effectively kills a wide range of broadleaf weeds, including dandelion, clover, and poison ivy, while simultaneously providing a quick nitrogen boost to promote greening. Ideal for outdoor enthusiasts needing a reliable solution for weed control and lawn fertilization, Scotts Liquid Turf Builder with Plus 2 Weed Control is designed for optimal performance when weeds are actively growing. With coverage of up to 6,000 sq. ft. for warm-season lawns and 4,000 sq. ft. for cool-season lawns, it offers excellent value for maintaining a healthy and vibrant lawn.

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BioAdvanced 3-in-1 Weed and Feed Granules

#3 CHOICE

BioAdvanced 3-in-1 Weed and Feed for Southern Lawns, Granules, 10 lb, Outdoor Weed Killer, Lawn Fertilizer

The BioAdvanced 3-in-1 Weed and Feed sets itself apart with its specialized formula tailored for Southern lawns, particularly effective on Bermudagrass and St. Augustinegrass. This 10 lb granule product combines weed control with fertilization, ensuring your lawn remains lush and vibrant.

Key Advantages

  • The 316-grade stainless steel formulation resists corrosion, enhancing durability and effectiveness.
  • Delivers up to 6 months of protection against broadleaf and grassy weeds, including crabgrass.
  • Contains essential nutrients to feed, green, and strengthen your lawn, maintaining its health throughout the growing season.
  • Designed for easy application with a broadcast or drop spreader, optimizing user convenience.

Limitations

  • Not compatible with certain grass types outside the Southern region, limiting its versatility.
  • Requires careful application to avoid over-fertilization, which can lead to lawn burn.

Best for outdoor enthusiasts needing a reliable solution to manage weeds while promoting healthy grass growth, the BioAdvanced 3-in-1 Weed and Feed is an excellent choice for homeowners dedicated to maintaining a beautiful lawn. Its unique formulation and extended protection make it a standout in lawn care products, although users should ensure it aligns with their specific grass types for optimal results.

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Scotts Turf Builder Triple Action Fertilizer

#4 CHOICE

Scotts Turf Builder Triple ActionI, Weed Killer and Preventer Plus Lawn Fertilizer, 4,000 sq. ft., 11.31 lbs.

The three-in-one formula sets Scotts Turf Builder Triple Action apart from other lawn care products. This innovative formula combines weed control, crabgrass prevention, and fertilizer to promote a thick, green lawn. The product comes in an 11.31 lb. bag, covering up to 4,000 sq. ft., making it suitable for various lawn sizes.

Key Advantages

  • The 316-grade stainless steel components of the spreader ensure durability and corrosion resistance, allowing for long-term use in various weather conditions.

Limitations

  • Not compatible with existing crabgrass; while it prevents new growth for up to four months, it will not eliminate established crabgrass.

Best for outdoor enthusiasts needing an efficient solution for maintaining a healthy lawn and controlling weeds effectively. This product is particularly suitable for homeowners with Bahiagrass, Centipedegrass, Kentucky Bluegrass, and other listed grass types. For optimal results, apply on a wet lawn with a Scotts spreader and water in after 24 hours. Use in early spring when dandelions are actively growing to maximize weed control and fertilization benefits.

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Ortho WeedClear Lawn Weed Killer 32 oz

#5 CHOICE

Ortho WeedClear Lawn Weed Killer Ready-To-Spray, Kills Crabgrass, Dandelion and Clover, 32 oz.

The fast-acting formula sets Ortho WeedClear Lawn Weed Killer Ready-To-Spray apart from competitors. This 32 oz. product is designed to effectively eliminate weeds such as crabgrass, dandelion, and clover, treating up to 5,000 sq. ft. Its easy-to-use design connects directly to a garden hose, allowing for quick application with a simple switch to “ON”.

Key Advantages

  • The use of **selective herbicides** ensures that while it targets unwanted weeds, it won’t harm established lawn grasses including Bermudagrass, Fescues, and Kentucky Bluegrass.

Limitations

  • Not available in Florida, Guam, Hawaii, or Louisiana, limiting accessibility for some users.

Ortho WeedClear is best for outdoor enthusiasts needing an efficient solution for maintaining a pristine lawn. Its advanced formula provides quick results, making it ideal for homeowners looking to manage common lawn weeds effectively with minimal effort.

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Faq about best fertilizer to kill weeds in lawn:

1:What is the best fertilizer to kill weeds in lawns?

The best fertilizers to kill weeds in lawns typically contain pre-emergent herbicides, such as those with ingredients like pendimethalin or prodiamine. These prevent weed seeds from germinating.

2:Can I use regular fertilizer to kill weeds?

Regular fertilizers do not kill weeds. They promote grass growth but may not address existing weed problems. Use a weed-and-feed product for dual action.

3:When should I apply fertilizer to kill weeds?

Apply fertilizer with herbicides in early spring or fall when weeds are actively growing. This timing enhances effectiveness against weeds.

4:Are there organic options for killing weeds in lawns?

Yes, organic options include corn gluten meal and vinegar-based herbicides. These can help manage weeds without synthetic chemicals.

5:How often should I fertilize my lawn to control weeds?

Fertilize your lawn every 6-8 weeks during the growing season to maintain healthy grass, which competes better against weeds.

6:Will using fertilizer harm my existing grass?

Using the right type of fertilizer will not harm your grass. Follow application instructions to avoid over-fertilization, which can damage your lawn.

Conclusion

Scotts Turf Builder Weed & Feed exemplifies a dual-action approach, effectively nourishing grass while simultaneously eradicating persistent weeds, ensuring a vibrant lawn. Its granular formulation allows for even distribution, promoting robust growth and health.

Conversely, Scotts Liquid Turf Builder Weed Control offers a rapid solution, targeting weeds with precision. This liquid application is ideal for those seeking swift results, penetrating deep into the weed structure for efficient elimination without compromising lawn integrity.