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Best Fertilizers for St. Augustine Grass – Top Picks 2023

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best fertilizer for st augustine grassAmidst the gentle rustling of leaves, your St. Augustine grass spreads like an emerald tapestry, embodying the essence of verdant beauty. Nurturing this expanse requires finesse, guided by science and an understanding of its distinct needs.

As you step into the realm of lawn care mastery, the quest for the finest nourishment begins. In the sun-soaked landscapes where St. Augustine flourishes, the choice of fertilizer becomes pivotal, shaping its resilience against harsh conditions and vibrant allure.

In the following exploration, discover the top-tier companions for your St. Augustine haven in 2023, as we unveil the scientific artistry behind cultivating and sustaining this luscious greenscape. Unveil the secrets of NPK ratios, discern the nuanced interplay between liquid and granular formulations, and unravel the organic versus synthetic conundrum.

With your yearning for belonging to the realm of lawn care connoisseurs, the path to mastery over St.

Key Takeaways

  • St. Augustine grass requires scientific care and specific nutrient needs to thrive.
  • The top 6 fertilizers for St. Augustine grass in 2023 include UltraGreen Lawn Fertilizer, Milorganite Eco-Friendly Fertilizer, Scotts Turf Builder Southern Lawn Food, Complete Lawn Fertilizer with Humic, Southern Lawns 3-In-1 Weed & Feed, and Organic Fall Fertilizer.
  • It is important to consider the nutrient requirements and formulation of fertilizers when choosing the best option for St. Augustine grass.
  • Soil testing is crucial for optimizing nutrient levels and pH balance in order to promote overall soil health and effective fertilization.

Top 6 Best Fertilizers for St. Augustine Grass

Introducing the top 6 best fertilizers for St. Augustine grass, these products have been meticulously selected to cater to the specific needs of your lawn. From the UltraGreen Lawn Fertilizer’s expansive coverage to the environmentally conscious choice of Milorganite Eco-Friendly Fertilizer, these solutions are designed to promote vigorous growth, lushness, and resilience in your St.

Augustine grass. Each fertilizer, such as the Southern Lawn Fertilizer for Southern Grass, boasts unique attributes that contribute to the overall health and vibrancy of your lawn, ensuring your St.

1. UltraGreen Lawn Fertilizer 14lbs – 5000 Sq Ft Coverage

Pennington 100536576 UltraGreen Lawn Fertilizer,View On Amazon
Covering an expansive 5000 square feet, the UltraGreen Lawn Fertilizer 14lbs ensures your lawn’s resilience against heat and drought while promoting deep, vibrant growth with its 5% IRON content. Crafted by Pennington, a trusted name in lawn care, this granular fertilizer offers a quick greening effect and extended feeding for up to 3 months.

Users have reported visible improvements in lawn quality within just a few weeks, especially when combined with consistent watering. With its non-organic composition, this fertilizer delivers efficient and noticeable results, making your lawn the envy of the neighborhood.

  • Provides quick greening and extended feeding for up to 3 months.
  • Contains 5% IRON for a deep, dark green lawn.
  • Effective for improving lawn quality and resilience against heat and drought.
  • Trusted brand in lawn care, backed by Central Garden & Pet.
  • Visible results within weeks of application.
  • Non-organic composition may not be suitable for those seeking organic alternatives.
  • Results might vary based on existing lawn health and maintenance practices.
  • Requires consistent watering to achieve optimal results.

2. Milorganite Eco-Friendly Fertilizer

Milorganite All-Purpose Eco-Friendly Slow-Release Salt-FreeView On Amazon
Discussing the second featured option, the Milorganite Eco-Friendly Fertilizer, this choice offers a balanced composition of well-fed microbes, making it a natural preference for those seeking nourishment for a variety of plants.

This fertilizer’s unique formula includes microbes that have been carefully processed after consumption, resulting in a sustainable solution for lawn and garden care.

With its slow-release nature, Milorganite ensures that your plants receive essential nutrients over 8-10 weeks, eliminating the need for frequent reapplication.

The balanced 6-4-0 (N-P-K) fertilizer ratio promotes strong root systems, sturdy stems, and a lush green color, even when faced with heat stress.

  • Sustainable and eco-friendly, composed of microbes processed after consumption.
  • Slow-release formula provides extended nourishment over 8-10 weeks.
  • Balanced 6-4-0 (N-P-K) ratio supports strong roots, sturdy stems, and vibrant color.
  • Safe for use with young plants and grass seed.
  • Salt-free composition makes it suitable for drought-prone areas.
  • Some users may find the aroma of the fertilizer to be unpleasant due to its organic nature.
  • Application guidelines should be carefully followed to avoid overuse or improper results.
  • While slow-release, the nutrients may not last as long as some synthetic counterparts.

3. Southern Lawn Fertilizer for Southern Grass

Scotts Turf Builder Southern LawnView On Amazon
Exploring the specifics of the Scotts Turf Builder Southern Lawn Food, you’ll find a carefully formulated solution tailored to the unique demands of Southern lawns. This granular fertilizer weighs 14 pounds and covers an expansive area of 5,000 square feet, ensuring comprehensive nourishment for your lawn.

Crafted by the renowned brand Scotts, this product combines innovation and expertise to cater specifically to the needs of Southern grasses. The fertilizer analysis of 26-2-13 showcases a precise blend of nutrients. Scotts’ proprietary All-in-One Particles penetrate deep into the soil, nurturing robust and resilient root systems.

This fortified shield ensures that your lawn remains vibrant even under challenging conditions of heat and drought.

  • Tailored for Southern grass varieties.
  • Contains Scotts All-in-One Particles for robust root growth.
  • Protects against heat and drought stress.
  • Versatile application for both wet and dry lawns during the growing season.
  • Water Smart formula promotes water-efficient lawn care.
  • Users have reported noticeable improvements in lawn health within weeks.
  • Some users may experience grass damage if not applied properly.
  • A small number of users have reported a price increase over time.
  • Not suitable for warm-season grass types within 1 month of the first expected frost.

4. Complete Lawn Fertilizer With Humic

The Andersons Professional PGF CompleteView On Amazon
Turning our attention to the fourth contender in the list, let’s delve into the attributes of the Complete Lawn Fertilizer with Humic. This product is tailored to cater to lawns with moderate nitrogen requirements, making it particularly effective for warm-season grass varieties like Tifway 419, Zoysia, and standard Bermuda.

Incorporating humic acid into its composition, it not only enhances the overall quality of your turf but also reduces the overall nutrient demands. The inclusion of MUtech coated slow-release nitrogen ensures uniform growth and extended feeding periods.

What sets this fertilizer apart is its innovative DG particles, which disperse quickly and completely into the soil upon watering, eliminating the need for physical coatings. This unique approach provides twice the particles per square foot compared to traditional options.

However, it’s important to note that this product is not available for sale in California or Oregon.

  • Tailored for lawns with moderate nitrogen requirements.
  • Humic acid-enhanced composition improves turf quality and reduces nutrient needs.
  • DG particles ensure efficient nutrient release and better coverage.
  • Effective for warm-season grass varieties like Tifway 419, Zoysia, and Bermuda.
  • Provides phosphorus and potassium for balanced nutrition.
  • Not suitable for lawns with high nitrogen demands.
  • Not available for sale in California or Oregon.
  • Potential shipping issues have been reported.
  • Some users may find the cost to be a consideration.
  • Limited availability in certain regions.

5. Southern Lawns 3-In-1 Weed & Feed

Delve into the specialized solution that transforms Southern lawns – the Southern Lawns 3-In-1 Weed & Feed. This powerful formula not only shields against persistent weeds but also nourishes your lawn for up to 6 months, creating a resilient and vibrant outdoor haven.

Crafted by experts at SBM Life Science, this 3-in-1 formula boasts a balanced blend of active ingredients, including 0.088% Dicamba acid, 0.041% Penoxsulam, and 0.027% Indaziflam. With an NPK Fertilizer Analysis of 35-0-3, it feeds your lawn, strengthens its roots, and promotes an enviable lush green color.

The granules are easy to use, applying with a broadcast or drop spreader, and are optimized for temperatures between 50 and 90 degrees Fahrenheit. This product has garnered praise for its effective weed control and simultaneous lawn nourishment.

  • 6-month protection against broadleaf, grassy weeds, and crabgrass
  • Positive feedback on improved lawn health and weed control
  • One application serves multiple purposes, eliminating the need for multiple products
  • Some users experienced grass damage due to improper application
  • Price increase noted over time
  • Application frequency may vary; some users apply more than once for desired results

6. Organic Fall Fertilizer 30-Pound

Espoma EOFW30 Organic Fall Fertilizer,View On Amazon
As you take a closer look at the 6th featured option in your quest to enrich your lawn, imagine the vibrant transformation that could await. A specialized blend of nutrients, this 30-pound Organic Fall Fertilizer by Espoma stands as a beacon of organic vitality.

Picture your lawn with a newfound vibrancy, nurtured by this natural winterizer, embracing the promise of spring greening. Crafted by Espoma, a trusted brand known for its dedication to quality, this fertilizer comes in convenient stick form, making application a breeze.

Its 8-0-5 fertilizer analysis offers a harmonious combination of nutrients to enhance your lawn’s vitality.

Weighing 30 pounds, each bag generously covers up to 5,000 square feet, ensuring comprehensive lawn care. This product plays a pivotal role in transforming lawns from average to exceptional, with the organic approach effectively minimizing weed growth and nurturing a vibrant green landscape.

  • Organic composition ensures safety for kids and pets.
  • Balanced 8-0-5 (N-P-K) fertilizer analysis promotes vibrant lawn health.
  • Unique slow-release nitrogen content provides extended nourishment.
  • Trusted brand with a commitment to quality and organic solutions.
  • Designed for easy application in convenient stick form.
  • Strong odor due to the presence of poultry manure.
  • Some users questioned application instructions for specific spreader models.
  • Specific spreader settings might not be provided on packaging or website.

What Does NPK Mean?

What Does NPK Mean
Transitioning from discussing the top fertilizers for St. Augustine grass, let’s delve into the essential concept of NPK ratios and their significance in fertilizer selection.

NPK refers to the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), crucial for fostering robust plant growth. Understanding nutrient ratios is paramount as they directly influence nutrient uptake, root development, and overall soil health.

When choosing the best fertilizer, the NPK ratio is a critical factor. Different grass types have distinct nutrient needs; for St. Augustine grass, a balanced N-P-K ratio like 3-1-2 is often recommended. The right nutrient balance enhances color, root strength, and disease resistance.

Moreover, correct fertilizer application techniques are essential to avoid nutrient runoff and environmental harm. Mastering nutrient ratios empowers homeowners to nurture a thriving St. Augustine grass lawn while contributing positively to the environment.

Key Points to Consider When Understanding Nutrient Ratios:

  1. Balance is Key: Opt for a fertilizer with a balanced N-P-K ratio, such as 3-1-2, to meet the specific nutrient requirements of St. Augustine grass.

  2. Nutrient Uptake: Proper nutrient ratios enhance nutrient uptake, leading to healthier root systems and overall plant vitality.

  3. Soil Health: Balanced fertilization improves soil health by preventing nutrient imbalances and promoting microbial activity.

  4. Fertilizer Application: Apply the chosen fertilizer according to recommended rates and schedules to ensure optimal nutrient availability for your grass.

By grasping the intricacies of NPK ratios and their implications, you can make informed decisions in selecting and applying the best fertilizer for your St.

When to Call a Lawn Care Pro

When to Call a Lawn Care Pro
Consider reaching out to a lawn care pro if you notice that your once-lush lawn has started to thin out and lose its vibrant color, as they can provide expert guidance on rejuvenating your turf. One interesting statistic to ponder is that a staggering 60% of homeowners have reported seeing improvements in their lawns’ health after seeking professional assistance.

Hiring Considerations:

  • Assess Qualifications
  • Evaluate Experience
  • Discuss Needs

Expert Advice:

  • Customized Solutions
  • Tailored Approach
  • Proven Strategies

Professional Services:

  • Comprehensive Care
  • Specialized Knowledge
  • Timely Maintenance

Lawn care professionals possess in-depth knowledge about proper fertilization and maintenance techniques. They can accurately identify nutrient deficiencies, recommend suitable fertilizers like those with slow-release nitrogen, and develop a customized plan for a healthy lawn.

Their expertise extends beyond fertilization, covering various aspects of lawn care.

By consulting lawn maintenance pros, you gain access to a wealth of insights that can revitalize your St.

How to Choose the Right Fertilizer for St. Augustine Grass

How to Choose the Right Fertilizer for St. Augustine Grass
Exploring optimal nourishment strategies for St. Augustine grass involves understanding crucial factors such as NPK ratios tailored to its growth requirements, deliberating between liquid and granular fertilizer application methods, and deciding between the merits of organic and synthetic options to ascertain a balanced, thriving lawn.

Delving into the science behind these choices allows homeowners to make informed decisions for their St.

NPK ratios for St. Augustine

Unlock the secret to a thriving lawn by grasping the significance of NPK ratios in nurturing your St. Augustine grass – the vibrant carpet that withstands all challenges. Nutrient balance plays a crucial role in optimizing grass growth.

When choosing fertilizers, understand the specific nutrient needs of St. Augustine grass. Achieving the right NPK ratios ensures efficient nutrient absorption, leading to vigorous growth, lush color, and a robust lawn.

Liquid vs. granular fertilizers

Choosing between liquid and granular options adds an extra layer of flexibility to your lawn care routine, providing you with varied methods for nourishing your St. Augustine turf. Liquid fertilizers offer rapid nutrient absorption through the leaves, enhancing quick results.

They’re especially useful for addressing nutrient deficiencies and promoting immediate growth. On the other hand, granular fertilizers release nutrients gradually, offering sustained nourishment. They are easier to apply and have a longer-lasting impact. Consider your preferences, climate, and the specific needs of your lawn when deciding between these two options.

Organic vs. synthetic options

Opting for an organic approach in nurturing your lawn is like cultivating a vibrant ecosystem that harmonizes with nature’s rhythm. Just as a diverse forest thrives without synthetic interventions, organic fertilizers work in synergy with the soil’s microbiome, fostering resilient growth that endures the tests of time and the trials of changing seasons.

While organic fertilizers offer bioavailable nutrients that improve soil structure, they may require patience as results are gradual. In contrast, synthetic fertilizers provide rapid results but can lead to soil imbalances and potential environmental concerns.

When choosing between organic and synthetic options, consider your lawn’s long-term health and the ecological impact of your decision.

Why Should You Fertilize St. Augustine Grass?

Why Should You Fertilize St. Augustine Grass
Enhance the vitality of your St. Augustine lawn by understanding the importance of proper fertilization. Soil enrichment through fertilization is paramount, ensuring optimum nutrient uptake by your grass.

A well-fertilized lawn exhibits enhanced resilience against stressors like diseases, pests, and environmental challenges. Timing matters; follow a consistent fertilizing schedule every 8 weeks to prevent nutrient deficiencies and maintain your lawn’s health.

St. Augustine grass has specific nutrient requirements. The primary macronutrients nitrogen, phosphorus, and potassium are key players in promoting robust growth, root development, and overall lawn health.

To achieve mastery in lawn care, delve into the science of nutrient ratios and their effects on your grass. By understanding the intricate interplay between nutrient availability and soil composition, you can ensure your St.

When to Fertilize St. Augustine Grass

When to Fertilize St. Augustine Grass
When it’s time to give your lawn the nourishment it deserves, like a chef adding the final touch to a gourmet dish, you need to know the right moment to apply the vital nutrients for your St. Augustine grass. Choosing the right fertilization frequency is a pivotal aspect of proper lawn care.

The timing of your fertilizer application depends on the growing season and the specific needs of your grass. Generally, St. Augustine grass benefits from regular fertilization during its active growth periods, which are typically in the warmer months of spring and summer.

A well-established fertilization schedule involves applying a complete fertilizer with balanced macronutrients like nitrogen, phosphorus, and potassium. Slow-release nitrogen fertilizers are particularly beneficial, providing sustained nourishment and reducing the risk of nutrient runoff.

By aligning your fertilizer timing with the grass’s growth phases, you contribute to its overall health, robustness, and vibrant appearance.

How to Fertilize St. Augustine Grass

How to Fertilize St. Augustine Grass
To properly nourish your St. Augustine grass, make sure the timing of fertilization aligns with its growth cycles and use the recommended techniques for application and maintenance. Fertilization frequency is crucial for maintaining a healthy lawn. Here’s how to effectively fertilize your St.

  • Understand Growth Patterns: St. Augustine grass experiences peak growth during the warm seasons, from late spring to early fall.
  • Choose the Right Fertilizer: Opt for nitrogen-rich fertilizers with slow-release sources. Look for formulations specifically designed for St. Augustine grass to ensure proper nutrient application.
  • Apply According to Recommendations: Follow the instructions on the fertilizer packaging for application rates. Over-fertilization can lead to excessive growth and vulnerability to pests and diseases.
  • Even Distribution: Use a spreader to evenly distribute the fertilizer across your lawn.
  • Watering After Application: Water your lawn immediately after applying fertilizer. This helps nutrients penetrate the soil and minimizes the risk of burning the grass.

By adhering to these techniques and understanding the seasonal care needs of your St. Augustine grass, you can maintain a lush, vibrant lawn that can withstand stressors and remain healthy throughout the year.

How Often to Fertilize St. Augustine Grass

How Often to Fertilize St. Augustine Grass
Maintain the health of your lush lawn by ensuring a consistent fertilization schedule that caters to the needs of your St. Augustine turf. Achieve optimal growth and vibrancy through proper nutrient management.

Follow these guidelines for a successful fertilization routine:

  1. Understand the growth cycle: Tailor your fertilization frequency to match the grass’s active growth periods, which typically occur during spring and summer.
  2. Gain insights from a soil test: Conduct a soil test to determine nutrient deficiencies and pH levels, helping you customize the nutrient schedule to your lawn’s specific requirements.
  3. Apply fertilizer seasonally: Apply fertilizer in accordance with seasonal changes. Opt for a phosphorus-rich blend in fall to support root development and store nutrients for winter.
  4. Prioritize nitrogen-rich blends: Use nitrogen-rich blends during the growing season for vibrant foliage and overall health.
  5. Integrate cultural practices: Combine fertilization with proper mowing, watering, and pest management practices to maximize the effectiveness of your nutrient regimen.

By adhering to a well-planned fertilization routine and incorporating these factors, you’ll foster the enduring beauty and resilience of your St.

The Importance of Soil Testing for St. Augustine Grass

The Importance of Soil Testing for St. Augustine Grass
Discover the hidden secrets of your lawn’s foundation by delving into its soil, an underground canvas that holds the key to unlocking the full potential of your thriving landscape. Conducting a soil analysis for your St. Augustine grass lawn can provide a wealth of benefits.

Not only does it reveal the nutrient balance of your soil, but it also offers insights into pH levels, organic matter content, and potential issues such as nutrient deficiencies or excesses. Testing accuracy is crucial as it guides your lawn health optimization efforts. Armed with accurate data, you can tailor your fertilization strategies to address specific deficiencies, ensuring that your St.

Consulting resources like southern turfgrass university extensions can provide guidance on interpreting results and making informed decisions. By delving beneath the surface, you embark on a journey towards mastering the art of soil management for a thriving, vibrant lawn.

Benefit Description
Precise Nutrient Application Soil testing guides precise fertilization, preventing over or under-application of nutrients.
Optimal pH Balance Adjusting pH according to test results promotes nutrient availability and enhances grass growth.
Targeted Problem Solving Identify and address specific nutrient deficiencies, ensuring effective problem resolution.
Environmental Protection Tailored nutrient application minimizes runoff, protecting local water bodies from pollution.
Cost Efficiency Fertilize based on test results, minimizing wastage and saving money in the long run.

Selecting the Right Lawn Fertilizers for St. Augustine Grass

Selecting the Right Lawn Fertilizers for St. Augustine Grass
Exploring the realm of St. Augustine grass lawn care, your journey delves into the critical domain of selecting the right fertilizers for optimal growth. From comprehending the vital role of soil testing to unraveling the intricate web of nutrient requirements, your path to a vibrant lawn begins with an understanding of these fundamental considerations.

The correct formulation of fertilizers, tailored to your specific lawn’s needs, further shapes your decision-making process, allowing you to embark on a journey towards lush, resilient turf.

Importance of soil testing.

Unlocking the full potential of your vibrant lawn begins with understanding the crucial role of soil testing – a pivotal step in ensuring your lush oasis remains resilient against environmental challenges and stress.

  1. Nutrient Optimization: Soil testing provides insights into nutrient deficiencies, enabling precise fertilizer selection.

  2. Testing Procedures: Experts analyze soil pH, nutrient levels, and organic matter, offering tailored recommendations.

  3. Soil Health Insights: Uncover valuable data on soil structure, drainage, and microbial activity for healthier turf.

  4. Fertilization Precision: Armed with accurate information, you can apply fertilizers with precision, preventing wastage.

  5. Environmental Harmony: By using organic fertilizers based on test results, you promote eco-friendly lawn management.

Maximize your St. Augustine grass’s potential by embarking on a journey of soil understanding. The information gained empowers you to choose the right fertilizers, ensuring your lawn thrives in the face of varying conditions, from salt tolerance to shade tolerance.

Understanding nutrient requirements.

Explore the essential vitality that lies within your St. Augustine lawn – a thriving canvas of green that reflects the dance of nature. Nurture this living masterpiece by delving into the intricate web of nutrient requirements, an elemental symphony that orchestrates its vibrancy.

St. Augustine grass thrives on a balanced soil nutrient balance, with a particular need for soluble forms of nitrogen. When choosing fertilizers, opt for those with the right nitrogen-phosphorus-potassium (N-P-K) ratio, like the 3-1-2 ratio, tailored to warm-season grass.

Utilize liquid or granular forms, depending on your preference and equipment like fertilizer spreaders. Familiarize yourself with nutrient deficiency signs to ensure timely adjustments in your fertilization techniques.

Choosing the right formulation

When nourishing your thriving St. Augustine lawn, making an informed choice in formulation is crucial. Understanding ratios like the N-P-K composition guides your decision. Granular vs. liquid options offer different absorption rates. Catering to nutrient needs, synthetic or organic choices arise.

Pennington’s fertilizer, such as UltraGreen, assures visible results due to its non-organic composition. Alternatively, consider the Espoma EOFW30 organic fall fertilizer for an all-natural approach, promoting enduring lawn health.

Tips for Fertilizing St. Augustine Grass

Tips for Fertilizing St. Augustine Grass
Transitioning from selecting the right fertilizers for St. Augustine grass, let’s delve into essential tips for effectively fertilizing this beloved turf. Maintaining the lushness of your St. Augustine grass requires a strategic approach to fertilization.

Follow these guidelines to ensure your lawn thrives in its USDA growing zones, particularly in warm coastal regions.

  1. Fertilizing Frequency: Fertilize your St. Augustine grass every 8 weeks during its growing season to meet its nitrogen needs and promote healthy growth.
  2. Nutrient Ratios: Understand the significance of N-P-K ratios (Nitrogen, Phosphorus, Potassium) for growth, color, and root development.
  3. Application Techniques: Apply fertilizers evenly to prevent uneven growth and burning. Use a broadcast or drop spreader for even coverage, ensuring every inch of your lawn receives essential nutrients.
  4. Soil Testing: Conduct regular soil tests to identify nutrient deficiencies and tailor your fertilization approach accordingly.
  5. Fertilizer Formulations: Choose the right fertilizer formulation based on your lawn’s needs – granular or liquid, slow-release or immediate-release, organic or synthetic.

By following these expert-backed practices, you’ll master the art of fertilizing St. Augustine grass, resulting in a vibrant, healthy lawn that thrives in warm coastal regions and well-drained soils. Your lawn will stand as a testament to your dedication to nurturing the beauty of nature right at your doorstep.


Concluding this exploration of the best fertilizer for St. Augustine grass, it’s clear that maintaining a lush and vibrant lawn requires not only a comprehensive understanding of the grass’s nutrient needs but also a careful selection of the right fertilizers.

From the remarkable resilience of UltraGreen Lawn Fertilizer to the environmentally friendly approach of Milorganite, and the precision of Scotts Turf Builder Southern Lawn Food, these top picks for 2023 offer tailored solutions.

With factors like NPK ratios, application techniques, and soil testing in mind, achieving a thriving St.

So, when embarking on this journey, remember that the beauty of your lawn is nurtured by the science behind these fertilizer choices.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.