Finding the right weed and feed product for St. Augustinegrass and Floratam varieties can protect your lawn from common lawn weeds while feeding it to stay lush all season. This guide compares select 5 products designed for Southern lawns, focusing on Florida-friendly weed control, slow-release feeding, and compatibility with St. Augustinegrass. The options below balance broad weed control with fertilizer formulas tailored to warm-season grasses, helping you maintain a thick, green lawn with less effort.
| Product | Brand | Key Benefit |
|---|---|---|
| BioAdvanced 3-in-1 Weed And Feed | BioAdvanced | 6 months of weed prevention; kills listed weeds; fertilizer for Southern lawns |
| Scotts Turf Builder Bonus S Southern Weed & FeedF2 | Scotts | Kills existing weeds; thickens grass to crowd out future weeds; Florida-friendly formula |
| Scotts Turf Builder Southern Triple Action | Scotts | Kills weeds; controls fire ants; feeds and strengthens for heat/drought |
| Southern Ag Atrazine St. Augustine Weed Killer | Southern Ag | Targets St. Augustine and Centipede weeds; simple quart-size coverage |
| Fertilome St. Augustine Weed & Feed | Ferti-Lome | Pre-emergent and post-emergent weed control with 15-0-4 fertilizer |
BioAdvanced 3-in-1 Weed And Feed For Southern Lawns
This 10 lb granular product provides weed control and lawn fertilization designed for Southern grasses, including Bermudagrass and St. Augustinegrass (Floratam). It offers up to six months of weed prevention, addressing both broadleaf and grassy weeds such as crabgrass. The formulation combines weed killer with a lawn fertilizer, helping maintain a healthy, aesthetically pleasing lawn while reducing weed pressure over time. Use as directed in warm-season months when weeds are actively growing for best results.
Scotts Turf Builder Bonus S Southern Weed & FeedF2
This Scotts formula focuses on Florida-friendly weed control with fertilizer that thickens turf to crowd out future weeds. It targets dollar weed, clover, dandelion, and several other common lawn pests. Application should occur when grass and weeds are actively growing, with immediate watering after application to activate the product. The blend supports a healthier lawn by building density, which can help suppress weed establishment over time.
Scotts Turf Builder Southern Triple Action
The Southern Triple Action product combines three functions: weed killing, fire ant prevention, and lawn fertilization. It is designed for St. Augustinegrass and other southern varieties to help withstand heat and drought. Fire ant prevention lasts up to six months, while the fertilizer feeds the lawn to promote resilience. This option is convenient for homeowners wanting integrated weed control, pest deterrence, and feeding in a single step.
Southern Ag Atrazine St. Augustine Weed Killer
This atrazine-based herbicide is formulated to control weeds in St. Augustine and Centipede grasses. Sold in a 32-ounce size, it covers a specific area efficiently, making it a practical choice for homeowners managing smaller lawns or patch treatment. Safety and application timing are important to ensure proper absorption and minimal risk to desirable grass species.
Fertilome St. Augustine Weed & Feed
This Fertilome blend combines pre-emergent and post-emergent weed control with a 15-0-4 fertilizer mix suitable for Centipede, Zoysia, and St. Augustine lawns. It is not recommended for Bermuda grasses or certain Northern grasses. The product aims to reduce weed emergence while providing steady feeding to support lawn health through growth cycles, helping maintain dense turf in warm-season climates.
Buying Guide: Key Purchase Considerations And Comparisons
When selecting a weed and feed product for St. Augustinegrass, consider the following factors to ensure the best fit for your lawn and climate:
- Weed spectrum: Identify which prevalent weeds you need to control (dandelion, clover, dollarweed, crabgrass, etc.). Some formulas target broader weed types, while others focus on specific species common in Florida lawns.
- Fertilizer balance: Look at the N-P-K ratio to match your lawn’s seasonal needs. Warmer months typically require more nitrogen to promote growth, while cooler periods may benefit from balanced formulations.
- Active ingredients: Atrazine-based products provide strong weed control but may have restrictions on use in certain landscapes or weather conditions. Fire ant prevention adds another layer of pest management in some formulas.
- Active season and timing: Products designed for Southern grasses often require application during active growth periods. Read label instructions for optimal timing and watering requirements.
- Application rate and coverage: Larger lawns may benefit from higher coverage options. Check square footage coverage and application frequency to budget correctly and avoid over- or under-application.
- Environmental and safety considerations: Consider pets, children, and nearby wildlife. Follow label directions for safe use, storage, and disposal to minimize environmental impact.
- Compatibility with St. Augustine variants: Floratam and other St. Augustine cultivars can be sensitive to specific herbicides. Confirm the product is labeled for St. Augustine grass before use.
For best results, alternate products or rotate among formulations across seasons to prevent weed resistance and maintain soil health. Always read package directions, perform spot tests if needed, and adjust watering to activate the formula as required. By choosing a product designed for Southern lawns and St. Augustinegrass, you maximize the potential for a thicker, healthier lawn with fewer weeds year after year.