Maintaining lush St. Augustine and Bermuda lawns involves selecting weed-and-feed products that address common crabgrass, dandelion, dollarweed, and other broadleaf weeds while nourishing the turf. The following picks are tailored for Southern lawns, focusing on St. Augustine, Floratam, Bermuda, and related grasses. Each product blends weed control with nutrient delivery to promote healthy, resilient lawns through the growing season.
| Product | Type | Coverage (approx.) | Key Benefit |
|---|---|---|---|
| Fertilome 13917 St. Augustine Weed & Feed 15-0-4 | Pre/post-emergent weed control + fertilizer | 25.6 lb bag | Designed for Centipede, Zoysia and St. Augustine lawns |
| BioAdvanced 3-in-1 Southern Lawns Weed & Feed (10 lb) | Weed prevention + kill + feeding | 10 lb | Specially formulated for Southern lawns including Bermudagrass and St. Augustine |
| Spectracide Weed & Feed 20-0-0 Ready-to-Spray (32 oz) | Dual-action weed control + fertilizer | 32 oz spray | Kills many broadleaf weeds while feeding |
| The Andersons Premium Weed and Feed 24-0-16 | Weed control + slow/quick release nitrogen | 18 lb bag | Controls over 250 broadleaf weeds; fast green up |
| Emerald 10-0-20 Lawn Fertilizer – 25 lb | Slow-release nitrogen with micronutrients | 25 lb | Deep green color with iron and NuTrace micronutrients |
Fertilome 13917 St. Augustine Weed & Feed 15-0-4
Fertilome 13917 combines a pre-emergent and post-emergent herbicide with a 15-0-4 fertilizer mix. The product targets lawns commonly found in the South, including St. Augustine, Centipede, and Zoysia. It is specifically advised against Bermuda grasses and other Northern grass varieties. This formulation aims to reduce weed pressure while supplying essential nutrients to support turf health. The 15-0-4 ratio emphasizes phosphorus and potassium balance, with nitrogen moderately present to aid growth without excessive top development.
Key considerations: This product is best for St. Augustine and similar warm-season grasses where pre-emergent weed suppression is beneficial. Do not use on Bermuda or Northern grasses, as labeled; misapplication can cause damage. For best results, follow bag directions regarding timing and rate, particularly around seasonal weed germination cycles.
BioAdvanced 3-in-1 Southern Lawns Weed & Feed (10 lb)
This 3-in-1 product is designed for Southern lawns, including Bermudagrass and St. Augustinegrass (Floratam). It provides weed prevention, weed killing, and lawn feeding for up to six months. The formulation targets listed broadleaf and grassy weeds such as crabgrass, dandelion, dollarweed, and clover, helping maintain a healthier lawn while reducing weed incidence. The 10-pound bag is suitable for smaller to mid-size turf areas or as a test application before a larger application.
Considerations: This option emphasizes long-lasting weed protection and broad weed spectrum control. Always match product use with your grass type and climate conditions. Apply according to label instructions to avoid stressing warm-season grasses during peak heat or drought periods.
Spectracide Weed & Feed 20-0-0 Ready-to-Spray (32 fl oz)
Spectracide’s ready-to-spray formula combines a dual-action weed killer with a fertilizer. The product delivers a 20-0-0 nitrogen-rich feed while addressing broadleaf weeds listed on the label. It is designed to simplify application with a hose-end sprayer, making it convenient for homeowners who want quick, even coverage across lawns that include St. Augustine and Bermuda grasses. This option is commonly used for rapid weed suppression and steady nutrient delivery.
Considerations: While it provides strong weed control, ensure compatibility with your specific grass species before application. Watch for weather conditions and irrigation needs after application to prevent nitrogen runoff or leaf burn on sensitive turf varieties.
BioAdvanced 3-in-1 Southern Lawns Weed & Feed (20 lb)
This larger 20-pound bag mirrors the 10-pound variant’s three-in-one design for Southern lawns, including Bermudagrass and St. Augustine. The six-month weed protection claim helps reduce maintenance frequency for busy households. It kills listed weeds like dandelion, dollarweed, and clover while feeding the lawn to support sustained growth and resilience during hot seasons.
Considerations: Heavier bags mean more coverage; ensure your application plan matches the lawn’s square footage. Follow label directions for best results, and consider split applications in larger yards to manage waste and reduce runoff.
The Andersons Premium Weed and Feed 24-0-16
The Andersons offers a premium weed-and-feed product with a 24-0-16 NPK ratio. It targets a broad spectrum of weeds, including dandelions and more than 250 broadleaf species. The formulation includes both quick- and slow-release nitrogen to balance a rapid green-up with extended feeding. This makes it a strong option for establishing or maintaining a robust warm-season lawn such as St. Augustine, Bermudagrass, or centipede.
Considerations: High nitrogen content can promote rapid growth; adjust application rates to avoid excessive top growth in hot weather. For best results, align applications with your lawn’s growth cycle and irrigation schedule.
Spectracide Weed And Feed 20-0-0 32 Ounces (6 pack)
This six-pack of Spectracide weed-and-feed includes a dual-action formula to kill major broadleaf weeds while feeding the lawn. The 20-0-0 nitrogen content supports quick greening while suppressing weeds noted on the label. It is designed for simplicity with a hose-end sprayer, making it practical for homeowners managing mid- to large-size Southern lawns that include St. Augustine, Bermuda, or Zoysia.
Considerations: Hose-end products can deliver variable coverage; calibrate your sprayer and avoid overspray onto non-target areas. Adhere to label directions to protect warm-season grasses during peak heat and drought conditions.
Emerald 10-0-20 Lawn Fertilizer – 25 lb
Emerald 10-0-20 is a slow-release fertilizer with micronutrients including iron and NuTrace. Its 10-0-20 ratio supports steady growth and strong root systems, while the micronutrients help deliver a deep green color without excessive top growth. This product is suitable for St. Augustine, Bermuda, Zoysia, and Centipede lawns, contributing to drought tolerance and disease resistance when applied according to label directions.
Considerations: A slow-release formula can reduce nutrient flushes and leaching; apply during appropriate seasons and water as directed to promote uptake. For best results, pair with period weed control programs to keep weeds from competing with turf growth.
Buying Guide: Key Purchase Considerations
- Grass type compatibility: Always verify that the product label lists St. Augustine, Floratam, Bermudagrass, or your specific lawn type. Some formulas exclude Bermuda or Northern grasses.
- Weed spectrum: Choose products that target the most common weeds in your area, such as dandelion, dollarweed, clover, chickweed, or crabgrass. Consider dual-action formulas for both weed control and feeding.
- Fall and spring timing: Apply according to growth cycles and weed germination periods. Pre-emergents work best before weed seeds germinate, while post-emergents address existing weeds.
- Nitrogen content and release rate: Higher nitrogen promotes quicker green-up but can cause rapid growth. Slow-release options reduce mowing frequency and nutrient runoff.
- Application method: Hose-end sprays, spreaders, and ready-to-use granular formats each have pros and cons. Ensure equipment compatibility and follow safety guidelines, especially on hot days.
- Lawn size and coverage: Check bag weight and coverage area. For larger yards, consider products available in bigger bags or bulk options to minimize applications while maintaining effectiveness.
- Environmental considerations: Look for labels that minimize phosphorus runoff, support soil health, and avoid over-fertilization that can harm waterways.
When selecting a weed-and-feed product for St. Augustine and Bermuda grasses, balance weed pressure with turf health. The listed options provide a range of pre- and post-emergent weed control, along with nutrient delivery to maintain a vibrant, resilient lawn across seasons.