The return of cooler weather doesn’t mean the lawn fight is over. Fall weed killers target tough broadleaf weeds and prepare the turf for spring growth. This guide highlights five proven products to help American homeowners manage fall weeds while feeding the lawn for healthier, greener grass next season. Each option combines weed control with fertilizer, delivering convenience and season-long results.
| Product | Brand | Coverage |
|---|---|---|
| Scotts Turf Builder WinterGuard Fall Weed & Feed3, 4,000 sq ft | Scotts | 4,000 sq ft |
| Scotts Turf Builder WinterGuard Fall Weed & Feed3, 5,000 sq ft | Scotts | 5,000 sq ft |
| Scotts Turf Builder WinterGuard Fall Weed & Feed5, 12,000 sq ft | Scotts | 12,000 sq ft |
| Scotts Turf Builder WinterGuard Fall Weed & Feed5, 4,000 sq ft | Scotts | 4,000 sq ft |
| Ortho WeedClear Lawn Weed Killer Ready-To-Spray, 32 oz | Ortho | 32 oz bottle |
Scotts Turf Builder WinterGuard Fall Weed & Feed3 — 4,000 Sq Ft
Scotts Turf Builder WinterGuard Fall Weed & Feed3 provides weed control plus fall lawn feeding. It targets over 50 listed lawn weeds, including clover, dandelion, plantain, and purslane, while delivering necessary nutrients for next spring. Apply to a moist lawn when weeds are actively growing and temperatures range from 60°F to 90°F for best results. This combination product reduces post-summer weed carryover and supports spring green-up.
Scotts Turf Builder WinterGuard Fall Weed & Feed3 — 5,000 Sq Ft
This 5,000 sq ft option mirrors the 4,000 sq ft formulation with the same WinterGuard technology to fight common fall weeds and provide lawn fertilizer. It helps curb visible weeds while feeding the grass, encouraging a stronger, healthier lawn come spring. Apply when conditions are favorable—cooling days with new weed growth—and avoid application during heavy rainfall or drought stress.
Scotts Turf Builder WinterGuard Fall Weed & Feed5 — 12,000 Sq Ft
This 12,000 sq ft variant offers extended coverage for larger lawns or multiple applications across a season. It combines weed-killing action with fall fertilization to support root development and turf resilience. As with other fall formulations, ensure weeds are actively growing and temperatures are between 60°F and 90°F for optimal performance. The formula targets broadleaf weeds and contributes to a better lawn come spring.
Scotts Turf Builder WinterGuard Fall Weed & Feed5 — 4,000 Sq Ft
This 4,000 sq ft pick from the Fall Weed & Feed5 line emphasizes stubborn fall weeds while supplying essential nutrients to maintain turf health. The dual-action product controls more than 50 listed lawn weeds and fertilizes the grass, preparing it for vigorous growth in the next growing season. Apply under typical fall conditions when weeds are actively growing and soil moisture is adequate.
Ortho WeedClear Lawn Weed Killer Ready-To-Spray — 32 oz
Ortho WeedClear provides fast-acting lawn weed control with a ready-to-spray application. It targets common list weeds such as crabgrass, dandelion, clover, and chickweed, delivering results with a single application when used as directed. This product is designed to be safe on common cool-season and warm-season grasses, offering a reliable option for spot or overall lawn treatment without additional fertilizer.
Buying Guide: Fall Weed Killer For Lawns
- Weed types and coverage: Choose a product that targets the weeds you see in your yard and provides sufficient coverage for your lawn size. Larger options are better for expansive lawns or multiple zones.
- Fertilizer benefits: Fall formulations that include a fertilizer help prep the lawn for spring by supporting root growth and resilience. Consider the nutrient composition and whether you need extra nitrogen or balanced feeding.
- Application timing: Apply when weeds are actively growing and temperatures fall within a moderate range (roughly 60–90°F). Avoid application before heavy rain or drought conditions to maximize uptake.
- Weather and safety: Follow label directions regarding watering, mowing, and reentry times. If you have pets or children, ensure safe intervals after application and store products properly.
- Herbicide types: Distinguish between broadleaf weed killers and pre-emergent or post-emergent formulas. Some products combine weed control with fertilization, while others focus on rapid weed kill with separate feeding optional later.
- Granular vs. liquid formats: Granular blends (like Scotts) are convenient for even distribution with a lawn spreader, while liquid or ready-to-spray options (like Ortho) can offer precise spot treatment. Consider your application method and lawn layout.
- Lawn compatibility: Ensure the product is suitable for your grass type (fescue, Kentucky bluegrass, Bermuda, etc.) and climate zone. Some formulas specify compatibility with certain grasses to avoid damage.
- Safety and storage: Keep products out of reach of children and pets. Store in a cool, dry place, away from direct sunlight and moisture to maintain effectiveness.