Maintaining a lush St. Augustine lawn means controlling weeds while feeding your turf. The right weed and feed product delivers targeted weed control, nutrient release, and compatibility with Floratam and other St. Augustine varieties. Below, five top options are reviewed with key features to help you choose the best fit for your yard. Each section includes product specifics, application notes, and expected outcomes to support effective lawn care throughout growing seasons.
Summary of chosen products:
| Product | Brand | Size | Key Benefit |
|---|---|---|---|
| Sunniland St.Augustine Weed & Feed Lawn Fertilizer | Generic | 5000 sq ft | Easy spreading; spring and fall applications; compatible with all St. Augustine grasses |
| BioAdvanced 3-in-1 Weed and Feed for Southern Lawns | BioAdvanced | 10 lb | 6-month prevention; kills listed weeds; broad coverage for Southern lawns |
| LESCO 50 lb. St. Augustine Grass Weed and Feed | LESCO | 50 lb | Slow release; long feeding; Floratam safe |
| GreenView Fairway Formula Spring Fertilizer Weed and Feed | Greenview | 18 lb | Crabgrass prevention; multiple weed control in one |
| The Andersons Premium Weed and Feed | The Andersons | 18 lb | Fast green up with quick and slow-release nitrogen; broadleaf control |
Sunniland St.Augustine Weed & Feed Lawn Fertilizer
This Sunniland formulation is designed for St. Augustine grasses and covers up to 5,000 square feet. It is noted for easy-to-spread granules and straightforward handling. The product supports two applications per year, in spring and fall, aligning with typical growth cycles for warm-season grasses. It is marketed as suitable for all types of St. Augustine grass, making it a versatile option for mixed lawns or older turf beds that require weed suppression alongside feeding.
BioAdvanced 3-in-1 Weed & Feed For Southern Lawns (10 lb)
BioAdvanced’s 3-in-1 Weed & Feed targets Southern lawns, including St. Augustinegrass varieties such as Floratam. The 10-pound bag is designed for broader coverage with weed prevention lasting up to six months. It kills several listed broadleaf and grassy weeds, including common intruders like dandelion and crabgrass. This product blends weed suppression with lawn feeding to support thick, vibrant turf while helping reduce future weed pressure over the season.
Southern Ag 006130 Atrazine St. Augustine Weed Killer
Southern Ag’s Atrazine product focuses on weed suppression in St. Augustine and Centipede grasses. The quart-sized container covers approximately 3,720 square feet, making it a solid choice for mid-size lawns with stubborn weed pressures. It is designed to target a range of common turf weeds while allowing the grass to continue receiving nutrients from the treated area. Applicability is especially suitable for lawns where selective weed control is necessary without extensive feeding.
LESCO 50 lb. St. Augustine Grass Weed and Feed
Lesco’s 50-pound bag is a professional-grade option designed specifically for St. Augustine turf. It features a fertilizer mix with slow-release components, supporting up to eight weeks of feeding. The formula is described as safe for Floratam varieties and is intended for application when the turf is wet, with subsequent drying to maximize uptake. This product suits larger yards or professional maintenance plans seeking sustained nutrient delivery and weed suppression over time.
GreenView Fairway Formula Spring Fertilizer Weed and Feed
GreenView’s Spring Fertilizer Weed and Feed offers a three-in-one approach: pre-emergent crabgrass prevention, weed control, and lawn feeding. The 18-pound bag covers up to 5,000 square feet, a practical size for mid-size to larger lawns. The product is designed to block crabgrass for several months while addressing broadleaf and grassy weeds, contributing to green growth and a healthier lawn profile as temperatures rise in spring.
The Andersons Premium Weed and Feed
The Andersons Premium Weed and Feed combines both quick- and slow-release nitrogen to provide a fast green-up with extended feeding. It targets a broad spectrum of weeds, including dandelions and more than 250 broadleaf varieties. This product is suitable for larger lawns needing robust weed suppression alongside reliable, ongoing nutrient availability to maintain lush St. Augustine turf health over time.
Buying Guide: Key Considerations For St Augustine Weed & Feed
- Grass compatibility: Ensure the formula is labeled for St. Augustine or Floratam varieties, as some grasses require specific nutrient and weed-control profiles.
- Weed spectrum: Review which weeds are addressed—broadleaf weeds like dandelion or creeping plants such as dollarweed—as well as grassy weeds like crabgrass.
- Feeding duration: Decide between quick green-up and longer-lasting feeding. Slow-release formulations provide sustained nutrition, reducing the need for frequent applications.
- Application area: Confirm coverage per bag and total lawn size. Larger yards may benefit from bigger bags or professional-grade products.
- Seasonal timing: Spring and fall applications align with warm-season turf growth cycles. Some products offer year-round prevention, while others focus on specific windows.
- Safety and yard use: Note any restrictions on pets or children after application, and follow label directions for mowing, watering, and re-entry intervals.
- Delivery method: Granular products typically require spreading equipment, while some brands offer ready-to-use sprayers. Consider ease of use for your setup.
- Non-target impact: Evaluate potential effects on nearby ornamentals or vegetable gardens; select products with targeted action if surrounding plantings are sensitive.
The choices above provide options across budget, coverage, and weed-control strength. For larger properties, a 50 lb bag or professional-grade formulation may offer better value per square foot, while smaller lawns can benefit from lighter bags designed for quick, targeted treatments. Always read the label for compatibility with your specific St. Augustine cultivar and follow recommended application rates to achieve optimal turf health and weed suppression.