Choosing the right weed and feed for St. Augustine grass helps control broadleaf weeds while nourishing your lawn. The products below are commonly used by homeowners and professionals to maintain Floratam and other St. Augustine varieties. This guide highlights five well-regarded options, their key features, and what to consider when selecting a program for spring, summer, and fall maintenance.
| Product | Brand | Key Benefit | Area Coverage |
|---|---|---|---|
| Sunniland St.Augustine Weed & Feed Lawn Fertilizer for St. Augustine Grass 5000 sq ft | Generic | Easy to spread, dual-season applications | Up to 5000 sq ft |
| LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam | LESCO | Slow-release feeding, broad weed control | Approx. 13,000 sq ft |
| Southern Ag 006130 Atrazine St. Augustine Weed Killer | Southern Ag | Targeted weed killer for St. Augustine | Treats 3,720 sq ft per quart |
| GreenView Fairway Formula Spring Fertilizer Weed and Feed | Greenview | Kills weeds, prevents crabgrass, feeds lawn | Up to 5,000 sq ft |
The table above summarizes four top options commonly used with St. Augustine grass. In addition, other ready-to-use blends offer quick weed control and feeding in one pass, though coverage and active ingredients may vary. When selecting a product, consider lawn size, local weed pressure, and whether you need spring, summer, or fall applications. Always follow label directions for safe and effective use on St. Augustine varieties.
Sunniland St.Augustine Weed & Feed Lawn Fertilizer
The Sunniland St. Augustine Weed & Feed product is designed for ease of use with granules that spread smoothly and can be applied in both spring and fall. It is suitable for use on all St. Augustine grass types, helping to suppress common broadleaf weeds while delivering nutrients to promote green growth. This dual-season approach makes it convenient for homeowners who want fewer applications while maintaining weed control.
LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam
Lesco’s professional-grade formulation combines a slow-release nitrogen source with Penoxsulam to fight persistent weeds common in St. Augustine turf. The product is designed for larger lawns (up to about 13,000 square feet) and should be applied when the turf is wet, followed by adequate drying. It provides extended feeding, with results extending up to eight weeks, and is considered safe for Floratam varieties when used as directed.
Southern Ag Atrazine St. Augustine Weed Killer
This herbicide targets weeds specifically in St. Augustine and centipede grasses, offering effective suppression with a practical quart-size bottle. The product is designed to treat up to 3,720 square feet per quart, making it suitable for midsize lawns seeking targeted weed control without extensive feeding blends. Always follow label directions for safe use around desirable grasses and ornamentals.
GreenView Fairway Formula Spring Fertilizer Weed and Feed
GreenView’s Fairway Formula blends three lawn-care tasks in one application: weed control, crabgrass prevention, and feeding. It provides crabgrass blocks for up to four months and targets a broad spectrum of annual and perennial weeds, making it a solid choice for lawns-sensitive seasons in spring. Its 5,000-square-foot coverage aligns well with average residential lots and supports healthy, dense turf growth.
Spectracide Weed & Feed 20-0-0, QuickFlip Sprayer
Spectracide’s dual-action formula kills major broadleaf weeds while feeding the lawn with a 20% nitrogen content. The kit includes a QuickFlip hose-end sprayer for convenient application, which can be appealing for homeowners who want a ready-to-use solution. It targets common weeds such as dandelion, chickweed, clover, and plantain while supporting ongoing lawn growth.
Ferti-Lome Winterizer and Weed Preventer II
This product emphasizes a blend suitable for southern grasses, including St. Augustine, with a focus on weed prevention and nutrient delivery. It includes micronutrients and a formulation designed to deliver up to four months of crabgrass control, supporting drought resilience and lawn health in warmer climates. Use per label directions for timing and application safety on St. Augustine turf.
The Andersons Premium Weed and Feed
The Andersons formula combines two types of nitrogen release for rapid greening and extended feeding. It includes control for a wide range of weeds, with claims of activity against dandelions and more than 250 broadleaf weeds. This product is positioned for homeowners seeking a robust, long-lasting feeding program that can complement weed-control strategies without frequent reapplication.
Spectracide Weed And Feed 20-0-0 (6 pack) with QuickFlip
This six-pack offers a consistent weed-and-feed approach with a 20-0-0 nitrogen ratio and the QuickFlip sprayer option for quick, uniform coverage. It targets a broad spectrum of weeds while promoting lawn growth, suitable for multiple applications across a growing season. Always apply according to label guidance to protect St. Augustine grass health.
Buying Guide
- Weed targets: Identify whether your primary need is broadleaf weed control, crabgrass prevention, or both. Some blends emphasize quick kill, others focus on long-lasting prevention and feeding.
- Grass compatibility: Confirm the product is labeled for St. Augustine varieties (including Floratam) to avoid turf damage and ensure effectiveness.
- Coverage and rate: Match product coverage to your lawn size. Larger lawns may benefit from 50 lb or 50,000+ square-foot equivalents, while smaller lawns may be adequately served by bagged blends for 3,000–5,000 sq ft.
- Application timing: Some formulas are optimized for spring, others for fall or year-round use. Consider your climate and weed cycle to maximize results.
- Nitrogen and nutrient balance: Look for products with balanced nitrogen and optional micronutrients to support turf health during stress periods.
- Safety and timing: Read label instructions for watering requirements, re-entry intervals, and any restrictions near ornamental plants or pets.
- Environmental impact: Favor formulations that minimize runoff and reduce environmental impact, particularly in areas with sensitive drainage.