Maintaining a lush, green lawn can be a daunting task, especially with persistent weeds threatening to ruin your efforts. Homeowners with St. Augustine grass know this struggle well. This warm-season grass is beloved for its rich color and resilience, but it can be susceptible to various weeds that compete for nutrients and space.
Choosing the right weed and feed fertilizer is critical for achieving a healthy lawn. A quality product not only nourishes your grass but also targets and eliminates unwanted weeds, ensuring your lawn remains vibrant and lush. Understanding the specific needs of St. Augustine grass, along with the type of weeds present, can help you select the most effective solution.
In this roundup, we’ve evaluated five top products tailored for St. Augustine grass. Each selection has unique features, strengths, and considerations to help you make an informed choice for your lawn care needs.
Compare the key specifications of each product below:
| Features | St Augustine Grass Fertilizer | BioAdvanced 3-in-1 Weed and Feed | Southern Ag Atrazine Weed Killer | Fertilome Weed and Feed | Scotts Turf Builder Fall Weed & Feed |
|---|---|---|---|---|---|
| Type | Liquid Fertilizer | Granular Fertilizer | Herbicide | Granular Fertilizer | Granular Fertilizer |
| Coverage | 32 oz | 10 lb Bag | Treats 3,720 sq ft | Not specified | Covers 4,000 sq ft |
| Weed Control | No | Yes, 3-in-1 | Weed Control | Yes | Yes |
| Best Use | Color & Growth | Weed Prevention | Spot Treatment | Weed & Feed | Fall Application |
| Unique Feature | Fast-Absorbing | 6-Month Prevention | Specialty Herbicide | Easy Application | Winter Preparation |
St Augustine Grass Fertilizer
TPS NUTRIENTS
St Augustine Grass Fertilizer, Liquid Lawn Food for Thicker Growth, 32 oz | Promotes Rich Green Color & New Runners, Supports Root Growth, Easy Mix & Feed, Fast Nutrient Delivery, High Nitrogen Formula
- Enhance Deep Green Color & Lawn Appearance – Boosts rich color for a healthier, more vibrant St Augustine grass lawn.
- Build Strong Roots for Heat & Wear Resistance – Supports deep root systems to improve durability in warm climates and heavy use.
- Fast-Absorbing Liquid Formula for Quick Results – Delivers nutrients efficiently for visible improvements in growth, color, and tu…
This liquid fertilizer from TPS Nutrients is designed for St. Augustine grass, perfect for homeowners who want a quick solution for enhancing lawn health. It’s particularly suitable for those living in warmer climates, where grass can suffer from heat stress and foot traffic.
The standout feature of this product is its fast-absorbing formula, which provides rapid results. Users report noticeable improvements in grass color and overall health within days, making it a great choice for those needing immediate results. Additionally, this fertilizer promotes deep root development, essential for resilience against heat and wear.
On the downside, being a liquid product, it requires dilution and application with a sprayer, which might not be as convenient as granular options. Some users might prefer the ease of granules, especially for larger lawns.
- Type: Liquid Fertilizer
- Coverage: 32 oz
- Application: Quick results
- Root support: Strong root development
- Origin: Made in USA
Best for: Homeowners seeking quick color enhancement and root support for St. Augustine grass.
BioAdvanced 3-in-1 Weed and Feed
BioAdvanced
BioAdvanced 3-in-1 Weed and Feed Granules for Southern Lawns - 10 lb Bag | Kills & Prevents Lawn Weeds, Feeds, and Strengthens Lawn - Covers Up to 4,000 Sq Ft
- FOR SOUTHERN LAWNS: 3-In-1 Weed and Feed is specially formulated to target types of weeds found in Southern lawns, like Bermudagra…
- PREVENTS NEW WEEDS UP TO 6 MONTHS: One application prevents listed weeds for up to 6 months; Apply when temperatures are between 5…
- KILLS SOUTHERN WEEDS: Kills Dandelion, Dollarweed, Clover, and other listed broadleaf weeds
BioAdvanced offers a versatile solution with its 3-in-1 formula, ideal for those looking to address both weeds and nutrition in their southern lawns. This product is particularly beneficial for homeowners dealing with common weeds like dandelion and clover, which can easily overrun St. Augustine grass.
This granule fertilizer stands out for its ability to prevent new weeds for up to six months, which is a significant time-saver for busy homeowners. It feeds the grass for three months, ensuring a thick, healthy lawn while tackling pesky weeds effectively.
However, application requires careful timing. For optimal results, it should be used when temperatures are between 50 and 90 degrees and when weeds are actively growing. This might limit when you can apply it, especially in fluctuating southern climates.
- Type: Granular Fertilizer
- Coverage: 10 lb Bag
- Weed Control: 3-in-1 action
- Prevention: Lasts up to 6 months
- Application: Use during active growth
Best for: Those wanting an all-in-one solution for weed prevention and lawn feeding.
Southern Ag 006130 Atrazine
Southern Ag
Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz Specialty Herbicide, Light Tan
- One quart treats 3,720 sq ft
- Controls Weeds in St. Augustine and Centipede Grasses
- Package Weight: 1.021 kilograms
Southern Ag’s product is a specialty herbicide that targets specific weeds in St. Augustine and Centipede grasses. It’s a great choice for homeowners who need targeted weed control without harming their grass.
This herbicide effectively controls a variety of weeds, making it an excellent option for those battling persistent weed issues. It covers a substantial area, treating up to 3,720 square feet with just one quart, which is impressive for those with larger lawns.
<pThe limitation of this product is that it focuses solely on weed control and does not provide any nutritional benefits to the grass itself. Homeowners may need to pair it with a separate fertilizer to ensure their lawn gets the nutrients it needs for optimal growth.
- Type: Specialty Herbicide
- Coverage: Treats 3,720 sq ft
- Weed Control: Targets specific weeds
- Grass Types: St. Augustine & Centipede
- Application: Spot treatment
Best for: Homeowners needing targeted weed control for St. Augustine grass.
Fertilome St. Augustine Weed and Feed
Fertilome’s offering is a straightforward weed and feed option tailored for St. Augustine grass. It’s perfect for those who want a simple solution for both fertilization and weed management.
This product promises easy application, which appeals to many homeowners. It simplifies the lawn care process by combining feeding and weed control in one step, reducing the hassle of multiple applications.
That said, specific coverage details are not mentioned, which could be a drawback for those with larger lawns. Users might find themselves purchasing more than expected if their lawn exceeds standard coverage.
- Type: Granular Fertilizer
- Application: Easy installation
- Focus: Weed and feed
- Target: St. Augustine grass
- Usage: For established lawns
Best for: Homeowners seeking simple application for weed and feed.
Scotts Turf Builder WinterGuard
Scotts
Scotts Turf Builder WinterGuard Fall Weed & Feed3, 11.43 lbs. | Weed Killer Plus Fall Fertilizer, Kills Over 50 Listed Lawn Weeds, Including Clover and Dandelion, Covers 4,000 sq. ft.
- FALL LAWN WEED & FEED: Scotts Turf Builder WinterGuard Fall Weed & Feed3 is a lawn weed killer and lawn fertilizer that controls w…
- KILLS CLOVER AND DANDELION: Fall weed and feed is a dandelion weed killer and kills over 50 listed lawn weeds, including clover, p…
- APPLY IN FALL TO PREPARE YOUR LAWN FOR WINTER: Apply weed control plus grass fertilizer to a moist lawn when weeds are actively gr…
Scotts Turf Builder WinterGuard is specifically formulated for fall application, making it ideal for those preparing their lawns for winter. This product is excellent for homeowners who want to ensure their grass remains strong through the colder months.
One of its key advantages is its ability to kill over 50 types of weeds, including stubborn varieties like clover and dandelion. This makes it a comprehensive solution for fall lawn care, as it combines weed control with fertilization, promoting healthy growth in spring.
However, the focus on fall applications may not suit everyone. Homeowners with immediate weed problems in other seasons might need a different product for timely intervention.
- Type: Granular Fertilizer
- Coverage: Covers 4,000 sq ft
- Application: Fall only
- Weed Control: Kills 50+ weed types
- Grass Types: Multiple grass varieties
Best for: Homeowners preparing lawns for winter and spring growth.
How We Chose These Products
Our selection process involved evaluating various factors, including performance, effectiveness, and user feedback. We focused on products specifically designed for St. Augustine grass, ensuring they cater to the unique needs of this popular lawn type. Each product was assessed based on its ability to provide nourishment and weed control, as well as ease of application.
We also considered coverage area and formulation type, whether liquid or granular, to accommodate different user preferences and lawn sizes. Our aim was to present a well-rounded list that meets various lawn care requirements and preferences.
Buying Guide: What Really Matters
When selecting a weed and feed fertilizer for St. Augustine grass, consider the specific needs of your lawn. Look for products that balance both fertilization and weed control. Understanding the types of weeds that commonly affect your lawn can guide your choice, ensuring you select a product that effectively targets these issues.
Additionally, consider the application method—liquid versus granular. Liquid fertilizers often act faster but may require more effort in application, while granular options can be more straightforward. Finally, check the coverage area to ensure you purchase enough product for your lawn size.
Our Top Recommendation
Our top choice is the BioAdvanced 3-in-1 Weed and Feed. This product offers an excellent balance of nutritional support and effective weed control, making it suitable for a wide range of southern lawns. For those seeking a specialized herbicide, the Southern Ag Atrazine is a solid option. If simplicity is key, Fertilome’s weed and feed provides a straightforward solution without the need for complex applications.
Frequently Asked Questions
What is the best time to apply weed and feed for St. Augustine grass? The best time is usually in the spring or fall, depending on the product. Check the instructions for specific temperature guidelines.
Can I use weed and feed in the summer? It’s generally not recommended as this can stress the grass. Summer applications may lead to lawn damage.
How often should I fertilize my St. Augustine grass? Fertilization typically occurs every 6-8 weeks during the growing season, but always refer to the product guidelines for specifics.
Will these products harm my pets? Most products are safe for pets once fully dried, but always read the label for safety instructions and potential precautions.
