Best Grass Fertilizers That Double as Weed Killers for Lush Lawns

Answering your search for a fertilizer for grass that also kills weeds, these products combine feeding your turf with broadleaf weed control. They’re suited for homeowners who want a simpler, two-in-one solution to maintain thick, green lawns while reducing weed pressure. Below are five top options, each with clear benefits and practical limitations to help you choose. The buyer intent table highlights the core strengths at a glance.

Product Best For Key Benefit Limitations
Scotts Liquid Turf Builder with Plus 2 Weed Control Small to medium lawns needing quick weed suppression Fast nitrogen boost and effective broadleaf weed control Hose-end application requires steady attention during growth
BioAdvanced 5-in-1 Weed and Feed Lawns facing multiple weed types with a long-lasting barrier Targets 200+ weeds and provides up to 6 months protection Best results with spring/summer timing; not for all grass types
Scotts Weed Control for Lawns General weed pressure across large areas Broadweed control with root-level action Some turf types may have exclusions; read label carefully
Scotts Turf Builder Triple Action1 New or established lawns needing both weed control and crabgrass prevention Three-in-one formula for weed control, crabgrass prevention, and feeding Crabgrass prevention focus; timing matters for best results
Ortho WeedClear Lawn Weed Killer Ready-To-Spray Spray-ready solution for quick, targeted weed control Fast-acting, hose-end spray covers large areas quickly Primarily weed control; fertilizer component is secondary

Product availability, application methods, and lawn size coverage can affect results. Always follow label directions for safe use, timing, and compatible grasses.

Scotts Liquid Turf Builder With Plus 2 Weed Control

Scotts Liquid Turf Builder With Plus 2 Weed Control

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  • Brand: Scotts
  • Form: Liquid, hose-end applicator
  • Weed control: Broadleaf weeds plus fertilizer
  • Best for: Homeowners who want a quick nitrogen boost with weed suppression during active growth

Best for: Small to medium lawns needing a quick, combined weed-killer and fertilizer solution. Choose this if you prefer a spray-on, ready-to-use hose-end approach for fast coverage. Limitation: relies on regular application during weed growth periods and may not be ideal for extremely large lawns without multiple refills.

Scotts Turf Builder Weed and Feed5

Scotts Turf Builder Weed and Feed5

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  • Brand: Scotts
  • Form: Granules
  • Weed control: Clover and dandelion; lawn feeding
  • Best for: Lawns that need ongoing weed suppression and thickening after application

Best for: Lawns requiring both weed suppression and lawn thickening, especially in moderate climates. Choose this if you want longer-lasting weed control per season. Limitation: Not recommended for certain turf types (check label for exclusions) and may require adjustments to mowing and watering schedules.

BioAdvanced 5-in-1 Weed and Feed Granules

BioAdvanced 5-in-1 Weed and Feed Granules

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  • Brand: BioAdvanced
  • Form: Granules
  • Weed control: 200+ listed weeds; crabgrass control
  • Best for: Lawns facing a wide weed spectrum with a long-term barrier

Best for: Homeowners seeking broad-spectrum weed control and a protective soil barrier lasting up to six months. Choose this if you want robust weed suppression through a growing season. Caution: Applies best when weeds are actively growing; timing and dosage affect effectiveness.

Scotts Weed Control for Lawns

Scotts Weed Control for Lawns

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  • Brand: Scotts
  • Form: Granules
  • Weed control: Over 200 listed weeds; broadleaf focus
  • Best for: Larger lawns with diverse weed challenges

Best for: Lawns needing broad-spectrum, root-level weed control across sizable areas. Choose this for a straightforward broadleaf weed solution. Limitation: Some turf varieties have exclusions; verify suitability for your grass type before application.

Scotts Turf Builder Triple Action1

Scotts Turf Builder Triple Action1

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  • Brand: Scotts
  • Form: Granules
  • Weed control: Dandelion, clover, and other listed lawn weeds
  • Best for: Both new and established lawns needing weed control plus crabgrass prevention

Best for: Lawns that want a three-in-one solution—weed control, crabgrass prevention, and feeding. Choose this if you need pre-emergence for crabgrass and a simple feeding program. Limitation: Not all grass species tolerate every formula; check label exclusions and timing to maximize results.

Scotts Turf Builder Triple Action1 (4,000 sq. ft.)

Scotts Turf Builder Triple Action1 4,000 sq. ft.

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  • Brand: Scotts
  • Form: Granules
  • Weed control: Clover, dandelion, and listed weeds
  • Best for: Medium-sized lawns with seasonal crabgrass concerns

Best for: A versatile option for mid-size lawns needing weed control alongside crabgrass prevention and fertilization. Choose this if you want reliable coverage for 4,000 sq. ft. with a single product. Limitation: Apply according to seasonal timing; effectiveness depends on weed activity and grass type.

Scotts Turf Builder Triple Action Built For Seeding

Scotts Turf Builder Triple Action Built For Seeding

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  • Brand: Scotts
  • Form: Granules
  • Weed control: Dandelion and crabgrass prevention for new lawns
  • Best for: Seeding projects needing weed prevention during establishment

Best for: New lawn installs needing a combination of weed prevention and early nutrition. Choose this to jump-start new grass while limiting weed establishment. Limitation: Specifically designed for seeding; check compatibility with your mature lawn needs.

Buying Guide

Key purchase considerations to help you compare these products:

  • Weed spectrum: Look for products labeled to control the common weeds in your area (dandelion, clover, crabgrass, etc.).
  • Grass type compatibility: Some formulas exclude St. Augustine, centipede, or other turf types. Always verify label compatibility with your lawn grasses.
  • Application method: Hose-end vs. apply-once granules. Hose-end sprays are quick but require consistent technique; granules need watering-in.
  • Longevity: Some products offer months of weed suppression; others provide seasonal control. Choose based on your weed pressure and climate.
  • Coverage area: Match product coverage to your lawn size (sq. ft.). Over- or under-application affects results and safety.
  • Seasonal timing: Many products work best when weeds are actively growing or during certain temperatures. Timing affects efficacy and safety for your grass species.

FAQs

  • Q: Can I use these products on all lawn types? A: Not always. Check the label for grass-type exclusions and regional suitability.
  • Q: Do these products also fertilize the lawn? A: Most combine weed control with feeding, but some emphasize weed control more than nutrition. Read the product details to confirm.
  • Q: How often should I apply them? A: Follow label instructions. Some allow 2x per year, others advise seasonal use with breaks between applications.
  • Q: Will they prevent weeds after application? A: Several products create a protective barrier up to several months, reducing weed emergence in subsequent weeks or months.
  • Q: What if I have pets or children? A: Observe re-entry times and ensure the product is fully dry/settled before allowing access to treated areas as directed on the label.
  • Q: Should I water after application? A: Many granule formulas require watering-in; some hose-end sprays may be ready to dry. Always follow label directions.