Finding the right fall weed and feed for St. Augustine grass helps suppress broadleaf weeds while supplying essential nutrients for a strong spring green-up. The products below are formulated to target common fall weeds and fertilize preparations for the warmer southern climate. This guide compares five top options, including Scotts Turf Builder WinterGuard Fall Weed & Feed3 and The Andersons Premium Weed and Feed, highlighting coverage, weed-control capabilities, and fertilizer quality to inform a practical choice for St. Augustine lawns.
| Product | Brand | Coverage/Size | Key Benefit |
|---|---|---|---|
| Scotts Turf Builder WinterGuard Fall Weed & Feed3 (4,000 sq ft) | Scotts | 4,000 sq ft | Kills 50+ listed weeds; fall fertilizer |
| Scotts Turf Builder WinterGuard Fall Weed & Feed3 (12,000 sq ft) | Scotts | 12,000 sq ft | Broad weed control with lawn fertilizer |
| Scotts Turf Builder WinterGuard Fall Weed & Feed3 (5,000 sq ft, 2-Pack) | Scotts | 5,000 sq ft (2-pack) | Two bags for extended season coverage |
| The Andersons Premium Weed and Feed 24-0-16 | The Andersons | Up to 5,000 sq ft | Broadleaf weed control; quick + slow-release nitrogen |
Note: Each product is designed to work best when weeds are actively growing and temperatures are between 60°F and 90°F. Read label directions for precise use and application timing for your specific St. Augustine lawn.
Scotts Turf Builder WinterGuard Fall Weed & Feed4,000 Sq Ft
Scotts Turf Builder WinterGuard Fall Weed & Feed3 combines weed control with fall lawn feeding. The formula targets more than 50 listed lawn weeds, including clover, dandelion, plantain, morningglory, chicory, evening primrose, and purslane. The product is applied to a moist lawn when weeds are actively growing and temperatures fall within the 60°F to 90°F range. This option is particularly suitable for homeowners seeking immediate weed reduction alongside nutrient delivery to prepare St. Augustine grass for winter dormancy and spring recovery. The 4,000 sq ft bag is a compact choice for smaller lawns or test applications before larger purchases.
Key features to consider: broad weed control, fall feeding, and the requirement for active weed growth for best results. The product can be part of a broader lawn care plan that includes proper mowing height and irrigation to maximize weed suppression and nutrient uptake.
Scotts Turf Builder WinterGuard Fall Weed & Feed3 (12,000 Sq Ft)
This larger 12,000 sq ft option maintains the same core benefit: weed control plus fall fertilizer. Aimed at mid-to-large yards, it helps reduce a broad spectrum of common fall weeds and prepares the lawn for a vigorous spring green-up. The WinterGuard guarantee offers protection during transitional seasons, which can be beneficial in regions where fall temperatures fluctuate. It’s ideal for homeowners who prefer fewer, larger bags to manage seasonal care with consistent results across a bigger lawn area.
Practical considerations: ensure even coverage by watering after application and avoid applying during extreme heat or periods of drought. The product is designed to be compatible with standard mowing and irrigation routines while delivering long-lasting nitrogen to support leaf growth and root development.
Scotts Turf Builder WinterGuard Fall Weed & Feed3 (5,000 Sq Ft, 2-Pack)
This two-pack provides 10,000 sq ft of protective weed control and fall fertilization, ready for medium-sized lawns. Like other WinterGuard formulations, it targets a wide range of common fall weeds and supplies essential nutrients to support rapid spring turf color and density. The two-bag approach can simplify logistics for homeowners who want a bundled, repeatable fall treatment without additional trips to the store. Follow label instructions regarding weather and moisture conditions to optimize weed kill and nutrient uptake.
The Andersons Premium Weed and Feed 24-0-16
The Andersons Premium Weed and Feed provides a balanced approach with both fast- and slow-release nitrogen to promote a quick green-up and sustained feeding. It’s designed to control dandelions and more than 250 broadleaf weeds, offering robust broadleaf weed management in fall. This product supports St. Augustine lawns by delivering essential nutrients while addressing weed pressure, which helps reduce future thinning and competition from weeds. For best results, apply when weeds are active and ensure proper watering after application to activate the product’s nutrients and herbicidal components.
Buying Guide: Key Considerations for Fall Weed and Feed on St. Augustine Grass
- Weed spectrum: Look for products that target common fall weeds in your region (dandelion, clover, plantain, etc.).
- Coverage: Choose a size that matches your lawn area to avoid reapplication and ensure even distribution.
- Nitrogen form and release: Fast-acting nitrogen delivers quick green-up, while slow-release nitrogen supports sustained growth and reduces the risk of rapid burn after application.
- Timing: Apply when weeds are actively growing and temperatures are within the recommended range (60°F–90°F) to maximize effectiveness.
- St. Augustine compatibility: Confirm label instructions for St. Augustine lawns to prevent potential lawn damage and ensure compatibility with typical regional soils.
- Watering and mowing: Follow guidelines for post-application watering and mowing height to optimize product performance and turf recovery.
- Season strategy: Consider combining fall weed control with a spring maintenance plan, including overseeding or aeration if needed for your lawn’s health.