Best Weed and Feed for St. Augustine Grass
If you’re aiming for a beautiful, weed-resistant St. Augustine lawn, the best weed and feed options thoughtfully balance weed control with steady feeding to keep those deep green blades thriving. However, it’s important to consider some products may not be suitable for St. Augustine lawns. The dilemma with weed-and-feed lawn products is that certain formulations can be detrimental. It may be better to buy a separate herbicide and fertilizer to optimize results.

| Product | What it does | Application notes |
|---|---|---|
| Scotts Turf Builder Triple Action 11.31 lb | Weed control, crabgrass prevention, and lawn fertilizer in one bag | Good for weed-prone yards; apply per label timing for seasonal cycles (approx. 4,000 sq. ft.). |
| Scotts Turf Builder Lawn Food, 12.5 lbs | Balanced fertilizer to improve color, density, and root structure | Up to 5,000 sq. ft.; broadcast spreader recommended; water if dry. |
| Scotts Turf Builder Triple Action 14.10 lb | Expanded coverage with same weed and crabgrass prevention plus fertilizer | For mid-sized lawns (≈5,000 sq. ft. per bag); monitor heat and irrigation after application. |
| Scotts Turf Builder SummerGuard Lawn Food with Insect Control | Fertilizer plus insect control for summer stress | About 5,000 sq. ft.; avoid drought conditions; water after if rainfall is limited. |
| Scotts Turf Builder WinterGuard Fall Weed & Feed | Fall weed suppression with essential nutrients to support winter resilience | ≈4,000 sq. ft.; apply in fall within recommended window; water if dry. |
| Scotts Liquid Green Max Lawn Food | Fast greening and nutrient delivery with iron | 32 oz bottle; dilution matters; use hose-end style as directed; multiple uses possible. |
- Tip: Pair weed-and-feed timing with your local soil temperatures to maximize pre-emergent weed control without over-stimulating growth. For Florida-specific timing considerations, check out Weed & Feed: Is It Helpful or Hurtful?

If you decide to use a commercial product, a good example to consider is the EB Stone Lawn – Weed & Feed 25-3-8, which combines TRIMEC herbicide with fertilizer and typically covers a substantial area. As you evaluate various products, it’s essential to read the labels and application schedules carefully.
Timing is critical when managing your lawn. Planning around activities such as aeration and overseeding is crucial for effective weed control. For more guidance on this, refer to Overseeding after weed control — Ask Extension, which provides insights on coordinating these tasks without compromising seeding.
For those looking to shop for options, you can find Weed and Feed products for St. Augustine grass on Amazon. This allows you to compare various products and ensure compatibility with your lawn's needs. Remember to verify that any chosen product is suitable for your specific lawn conditions and check customer feedback for additional insights.
What’s your go-to blend for keeping St. Augustine lush and weed-free this season? Share your experiences or questions in the comments, and let’s fine-tune a plan together.




