Maintaining a healthy St Augustine grass lawn can be challenging when weeds compete for nutrients and space. Choosing the right weed control product is essential to keep your lawn lush and vibrant. Below is a comparison table featuring some of the best weed control products designed specifically for St Augustine grass, highlighting their key features to help guide your decision.
| Product | Brand | Key Features |
|---|---|---|
| Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz | Southern Ag | Treats 3,720 sq ft, Controls broadleaf weeds in St. Augustine and Centipede grasses |
| Southern Ag Atrazine St. Augustine Grass Weed Killer, 1 Gallon | Southern Ag | Kills broadleaf weeds, suppresses crabgrass, used in Centipede grass |
| Fertilome St. Augustine Weed & Feed 15-0-4 (12.8 lbs.) | ferti-lome | Pre-emergent and post-emergent control, Includes fertilizer mix, Suitable for St. Augustine |
| Spectracide Weed Stop For Lawns Concentrate, 32 oz, 6-Pack | Spectracide | Kills weeds without harming lawn, Atrazine based, Targets St. Augustine and Centipede grasses |
| LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam | LESCO | Slow-release fertilizer, Safe for Floratam variety, Treats 13,000 sq ft, Contains Penoxsulam |
Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz Herbicide
The Southern Ag 006130 Atrazine St. Augustine Weed Killer is a specialty herbicide formulated specifically for controlling weeds in St. Augustine and Centipede grasses. With one quart treating up to 3,720 square feet, it efficiently targets common broadleaf weeds while maintaining the health of your turf. The light tan liquid offers ease of application and is particularly valued for its targeted action on weeds without damaging the grass.
- Treats up to 3,720 sq ft per quart
- Effective on broadleaf weeds in St. Augustine and Centipede grasses
- Light tan color for easy visibility during application
Southern Ag Atrazine St. Augustine Grass Weed Killer 1 Gallon
This 1-gallon concentrate from Southern Ag provides a broad spectrum weed control solution tailored for St. Augustine and Centipede grass types. It kills many broadleaf weeds and also offers suppression of crabgrass. Homeowners seeking a larger quantity for bigger lawn areas will appreciate this option, which combines effectiveness with economical usage.
- Targets many broadleaf weeds effectively
- Suppresses crabgrass growth
- Safe for use on Centipede grass
Fertilome St. Augustine Weed & Feed 15-0-4 Fertilizer Blend
Fertilome’s Weed & Feed mix is a dual-action product delivering both weed control and nutrients that support St. Augustine grass growth. This product features a 15-0-4 fertilizer formula and controls weeds both pre-emergent and post-emergent. However, it is critical to note that it’s not recommended for Bermuda or Northern grass types, ensuring safe use on St. Augustine, Centipede, and Zoysia lawns.
- Pre-emergent and post-emergent weed control
- Provides essential nutrients with 15-0-4 fertilizer formula
- Designed specifically for St. Augustine, Centipede, and Zoysia grasses
- Not for use on Bermuda grass or Northern grass species
Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate
Designed for safe use on all St. Augustine grass varieties and Centipede lawns, the Spectracide Weed Stop is a concentrated herbicide that kills weeds without damaging your lawn. Its atrazine-based formula effectively controls existing weeds and prevents new weed seeds from germinating when applied correctly, ensuring comprehensive protection for your turf.
- Kills emerged weeds and prevents new growth from seeds
- Contains atrazine for targeted St. Augustine grass weed control
- Safe when used according to label instructions
- Available as a ready-to-spray concentrate
LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam
LESCO offers a professional-grade weed and feed product formulated especially for St. Augustine grass, including the Floratam variety. This 50-pound bag covers up to 13,000 square feet and features Penoxsulam for effective weed control. Its slow-release fertilizer provides nutrients for up to 8 weeks. For best results, apply when the turf is wet and allow it to dry fully.
- Covers large areas of up to 13,000 sq ft
- Slow-release formula provides long-lasting feeding (up to 8 weeks)
- Penoxsulam herbicide targets a broad range of weeds
- Safe on Floratam and other St. Augustine grass varieties
Scotts Liquid Turf Builder with Plus 2 Weed Control
Scotts Liquid Turf Builder is a liquid weed control and fertilizer solution that actively targets broadleaf weeds like clover, dandelion, and poison ivy while giving your lawn a swift nitrogen boost. It is ready-to-spray and designed for use when weeds are actively growing, making it a convenient and effective choice for St. Augustine grass lawns.
- Kills listed broadleaf weeds on St. Augustine grass
- Provides quick nitrogen boost for healthy lawn growth
- Liquid formula allows for easy and even application
- Effective on tough weeds such as poison ivy and ground ivy
Southern Ag Atrazine 32oz + Celsius WG Weed Control Combo
This combo pack from Southern Ag pairs 32oz of Atrazine Weed Killer with Celsius WG, offering broadleaf weed control tailored for St. Augustine and Centipede grasses over 3,720 square feet. Celsius WG adds extended weed control including dandelions, while atrazine also suppresses crabgrass. This combination ensures comprehensive care and protection for your lawn.
- Covers over 3,720 sq ft
- Celsius WG controls over 120 weed types, safe for St. Augustine
- Atrazine provides both weed control and crabgrass suppression
Buying Guide: Selecting the Right Weed Control for St. Augustine Grass
Choosing the best weed control for your St. Augustine grass lawn requires considering multiple factors to ensure effective and safe treatment of weeds while preserving your turf’s health.
1. Targeted Weed Types
Identify the weed species prevalent in your lawn. Products like Southern Ag Atrazine are effective against a wide range of broadleaf weeds, while others like LESCO with Penoxsulam target additional weed types. Some products, such as Fertilome Weed & Feed, combine fertilizer with weed control, addressing weed problems along with feeding your grass.
2. Application Method and Concentration
Choose between liquid concentrates and granular products based on ease of application and lawn size. Liquids, like Scotts Liquid Turf Builder, offer quick absorption and are suitable for smaller areas or targeted spots. Granular products, like LESCO Weed and Feed, cover large spaces and provide slow-release feeding.
3. Lawn Grass Compatibility
Ensure the product is safe for St. Augustine grass varieties, including Floratam. Some herbicides are designed specifically for St. Augustine and Centipede grasses and may be harmful to other types like Bermuda or Northern grasses.
4. Coverage Area
Consider the size of your lawn when selecting product sizes. Small lawns benefit from quart or 32oz bottles, whereas larger areas require gallon concentrates or large bags like LESCO’s 50 lb option for economical coverage.
5. Weed Control Spectrum and Fertilization Needs
Combination weed and feed products are convenient for simultaneous lawn care but require proper timing for maximum effect. Determine if your lawn needs supplemental nitrogen or other nutrients before selecting these products.
6. Safety and Environmental Considerations
Carefully follow label instructions to minimize risk to desirable plants and pets. Using weed control products formulated specifically for St. Augustine grass ensures minimal turf damage and promotes sustainable lawn care.