Autumn is the ideal time to tackle weeds before they surge in spring. The products below are designed to target common cool-season and fall-weeds, while nourishing your turf for the next growing season. The selections cover pre-emergent and post-emergent needs, plus combinations that feed as they weed, helping you maintain a thick, healthy lawn.
| Product | Coverage | Type | Brand |
|---|---|---|---|
| Scotts Turf Builder WinterGuard Fall Weed & Feed3 | 4,000 sq. ft. | Post-emergent weed killer + fertilizer | Scotts |
| Scotts Turf Builder WinterGuard Fall Weed & Feed5 (4k) | 4,000 sq. ft. | Post-emergent weed killer + fertilizer | Scotts |
| Scotts Turf Builder WinterGuard Fall Weed & Feed5 (12k) | 12,000 sq. ft. | Post-emergent weed killer + fertilizer | Scotts |
| Scotts Turf Builder Triple Action | 4,000 sq. ft. | Killer + crabgrass preventer + fertilizer | Scotts |
| Spectracide Weed Killer | 10.8 lb bag | Post-emergent weed killer | Spectracide |
Scotts Turf Builder WinterGuard Fall Weed & Feed3
Scotts Turf Builder WinterGuard Fall Weed & Feed3 combines weed control with fall lawn fertilization. It targets more than 50 listed weeds, including clover, dandelion, plantain, and purslane, while feeding the lawn to prepare for spring regrowth. Apply to a moist lawn when weeds are actively growing and temperatures are between 60°F and 90°F for best results. This product is designed to promote a thicker, greener lawn by addressing both weed suppression and nutrient needs in the fall season.
Scotts Turf Builder WinterGuard Fall Weed & Feed5 (4k)
This 4,000 sq. ft. version of the Fall Weed & Feed5 provides a similar dual action: weed control and fall fertilization. It handles over 50 listed weeds, including clover and dandelion, while feeding the lawn to support spring recovery. Apply during periods when weeds grow actively and temperatures stay within the 60°F–90°F window for optimal performance. Ideal for homeowners seeking a balance of weed suppression and nutrient boost in fall.
Scotts Turf Builder WinterGuard Fall Weed & Feed5 (12k)
For larger lawns, this 12,000 sq. ft. bag combines robust weed control with fall fertilization. It addresses more than 50 listed weeds such as clover and dandelion, while nourishing the turf for a stronger start in spring. Ideal for common lawn sizes that require comprehensive fall treatment without multiple applications. Apply to a moist lawn when weeds are active and temperatures are in the 60°F–90°F range for best results.
Scotts Turf Builder Triple Action
Triple Action blends weed killing, crabgrass prevention, and lawn feeding in a single product. It controls existing listed weeds (including dandelion, clover, dollarweed, and plantain) while preventing crabgrass for up to four months and deterring other listed grassy weeds. This makes it a solid choice for homeowners seeking a single-step solution that handles both weed control and nutrition through fall into spring.
Scotts Halts Crabgrass & Grassy Weed Preventer
As a pre-emergent option, Halts helps prevent the germination of crabgrass, foxtail, spurge, and other listed weeds in early spring and fall. It is designed to be used when conditions favor weed seed germination, providing season-long prevention when applied correctly. This product is best used as part of a broader lawn care plan that includes post-emergent weed control for any existing weeds.
Spectracide Weed Killer
Spectracide Weed Killer is designed to kill more than 200 types of weeds without harming lawns when used as directed. It also offers a pre-emergent control benefit to help prevent crabgrass and other annual grasses. A practical option for broad-spectrum weed management, with guidance on application timing and rates to optimize lawn health and weed suppression through fall and beyond.
Buying Guide: Fall Weed Control For Lawns
- Weed type and timing: Fall weed killers target cool-season and winter weeds. Choose products labeled for fall use and compatible with your grass type. Post-emergent formulas address weeds currently growing, while pre-emergents prevent seeds from germinating.
- Fertilization vs. weed control: Some products combine fertilizer with weed control. This helps prepare your lawn for spring by feeding it while suppressing weeds. Ensure your lawn’s moisture level matches the product’s instructions for best results.
- Lawn size and coverage: Select a product that covers your lawn area. Larger lawns may benefit from bigger bags or concentrated formulas. Check per-bag coverage and application rates to avoid waste or under-application.
- Weed spectrum: If your lawn has a wide range of weeds (dandelion, clover, plantain, crabgrass, etc.), consider a product with broad-spectrum control or a combination solution (killer plus preventer or fertilizer).
- Safety and lawn type: Verify compatibility with your grass species (cool-season vs warm-season) and follow label directions regarding watering, mowing, and re-entry times after application. Some formulas can be used on multiple lawn types; others are more specific.
- Environmental considerations: Look for products with lower environmental impact and consider alternatives like integrated lawn care that reduces chemical dependence, such as improving mowing height, aeration, and overseeding.
- Application timing: Apply during periods when weeds are actively growing and temperatures fall within the recommended range. In fall, early to mid-fall often yields strong results before winter dormancy.
- Storage and handling: Keep products sealed, stored away from children and pets, and follow label guidance for safe disposal and disposal of empty containers.
This selection prioritizes products commonly available on major retailers and labeled for fall weed control with lawn-nourishing benefits. When choosing, consider your lawn size, weed profile, and whether you prefer a single-step solution or a combination of weed control and fertilizer. Maintain best practices: proper mowing height, even irrigation, and timely applications to maximize fall and next-season lawn health.