You're knee-deep in the heat of summer, and your St. Augustine grass is looking a bit worse for wear. You're on the hunt for the perfect fertilizer to give it a healthy boost, but the options can feel overwhelming. Maybe you've spent hours scouring Amazon reviews or consulted with gardening experts, but you still can't decide which one will deliver the best results. As you scan the aisles, you see a plethora of choices, each promising to bring your lawn to life. But what really sets the best summer fertilizers for St. Augustine grass apart?
Key Takeaways
- When shopping for the best summer fertilizers for St. Augustine grass, look for products with a high nitrogen content, as this will promote healthy growth and greener foliage.
- A slow-release formula is essential for maintaining a consistent nutrient delivery system, reducing the need for frequent applications.
- Consider products that contain phosphorus-free formulas, as these are safer for the environment and won't leach into waterways.
- Always choose a fertilizer that is specifically designed for St. Augustine grass, as these products have been tailored to meet the unique needs of this particular type of grass.
- When comparing products, pay close attention to the coverage area, ensuring that the product you choose can handle your lawn's size without requiring multiple applications.
| Weed-Free Lawn Starter |  |
Sunniland St. Augustine Weed & Feed | Weed-free lawn | Easy application | Versatile for St. Augustine grass | View on Amazon | Read Review |
| Balanced Lawn Nutrition |  |
Advanced 16-4-8 Lawn Food | Balanced NPK formula | High-quality ingredients | Suitable for all grass types | View on Amazon | Read Review |
| All-in-One Lawn Protection |  |
Scotts Turf Builder SummerGuard | All-in-one lawn protection | Won't burn lawn | Insect control feature | View on Amazon | Read Review |
| Fast-Absorbing Lawn Food |  |
St. Augustine Grass Fertilizer | Fast-absorbing nutrients | High-nitrogen formula | Easy mix and feed design | View on Amazon | Read Review |
| Balanced Lawn Nutrition 2 |  |
Sunniland St. Augustine Lawn Fertilizer | Balanced 20-0-6 nutrient formula | Phosphorus-free | Slow-release nitrogen | View on Amazon | Read Review |
| Strong Root Growth |  |
Scotts Turf Builder Lawn Food | Builds strong roots | Pesticide-free formula | Suitable for all grass types | View on Amazon | Read Review |
| High-Nitrogen Formula |  |
SeedRanch St. Augustine Lawn Fertilizer | High-nitrogen formula | 6% iron content | 12,000 sq ft coverage | View on Amazon | Read Review |
More Details on Our Top Picks
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Sunniland St. Augustine Weed & Feed
For those with large lawns, Sunniland St. Augustine Weed & Feed is an efficient and straightforward solution. Its easy-to-spread granules and versatility for all types of St. Augustine grass make it a top choice for many homeowners. The 2-application schedule for spring and fall ensures a consistent and well-nourished lawn. However, this product may not be the best option for those seeking a more targeted or precise fertilizer. If you're willing to put in the extra effort, the results are well worth it.
- Brand:Sunniland
- Type:Granular Fertilizer
- Size/Capacity:5000 sq ft
- Material:Nitrogen-based
- Power/Speed:N/A
- Count:2 applications
- Additional Feature:Weed control for 2 months
- Additional Feature:Lawn feed for St. Augustine grass
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Advanced 16-4-8 Lawn Food
If you're looking for a liquid fertilizer that provides a balanced blend of nutrients, Advanced 16-4-8 Lawn Food is an excellent choice. This product is manufactured in the United States and contains high-quality feed-grade ingredients that promote healthy growth and lush lawns. With its easy-to-use design and complete NPK formula, it's suitable for a wide range of grass types.
- Brand:Simple Lawn Solutions
- Type:Liquid Fertilizer
- Size/Capacity:32 oz
- Material:NPK-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Seaweed and fish-based formula
- Additional Feature:Concentrated spray for easy application
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Scotts Turf Builder SummerGuard
Scotts Turf Builder SummerGuard is a comprehensive lawn care product that feeds and strengthens your lawn against heat and drought. This product is guaranteed not to burn your lawn and also kills and protects against listed bugs. The insect control feature provides additional peace of mind, ensuring a healthy and pest-free lawn.
However, this product may not be suitable for those with sensitive skin, as it contains certain chemicals.
- Brand:Scotts
- Type:Granular Fertilizer
- Size/Capacity:13.35 lbs
- Material:Nitrogen-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Feeds and strengthens lawn
- Additional Feature:Kills and protects against bugs
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St. Augustine Grass Fertilizer
This liquid fertilizer is specifically designed for St. Augustine grass and provides fast-absorbing nutrients for quick results. The high-nitrogen formula promotes healthy growth and a rich green color, while the easy mix and feed design makes application simple. This product is also made in the USA, ensuring a high level of quality.
However, this product may not be suitable for those with large lawns, as it has a relatively small coverage area.
- Brand:N/A
- Type:Liquid Fertilizer
- Size/Capacity:8 oz
- Material:Nitrogen-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Supports root growth
- Additional Feature:Promotes rich green color
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Sunniland St. Augustine Lawn Fertilizer
This slow-release nitrogen granular lawn food is specifically designed for St. Augustine grass and provides balanced nutrition for healthy growth and color. The 20-0-6 nutrient formula promotes strong turf development and maintains lawn health without added phosphorus. This product is also phosphorus-free, making it a great option for those with concerns about phosphorus in their fertilizer.
However, this product may not be suitable for those seeking a more targeted or precise fertilizer.
- Brand:Sunniland
- Type:Granular Fertilizer
- Size/Capacity:20 lb
- Material:Nitrogen-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Covers up to 5,000 sq ft
- Additional Feature:Easy-to-spread granules
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Scotts Turf Builder Lawn Food
Scotts Turf Builder Lawn Food is a comprehensive lawn care product that feeds and strengthens your grass to help protect against future problems. This product builds strong, deep roots and improves your lawn's ability to absorb water and nutrients. With its pesticide-free formula, you can trust that your lawn is safe and healthy.
However, this product may not be suitable for those with specific lawn care needs, as it has a more general formula.
- Brand:Scotts
- Type:Granular Fertilizer
- Size/Capacity:12.5 lbs
- Material:NPK-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Feeds and strengthens lawn
- Additional Feature:Suitable for all grass types
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SeedRanch St. Augustine Lawn Fertilizer
This fertilizer is specifically designed for St. Augustine lawns and provides high-nitrogen formula for healthy growth and color. The 6% iron content promotes excellent greening and helps to maintain a lush, vibrant lawn. With its 50-lb capacity, this product is suitable for larger lawns and provides 12,000 sq ft coverage.
However, this product may not be suitable for those with specific lawn care needs, as it has a more general formula.
- Brand:SeedRanch
- Type:Granular Fertilizer
- Size/Capacity:50 lbs
- Material:Nitrogen-based
- Power/Speed:N/A
- Count:N/A
- Additional Feature:Suitable for St. Augustine lawns
- Additional Feature:Promotes excellent greening
Frequently Asked Questions
What is the best time to apply fertilizer to St Augustine grass in the summer?
When it comes to fertilizing St Augustine grass in the summer, timing is crucial. The best time to apply fertilizer is during the growing season, typically from late spring to early fall. Applying fertilizer during this period helps promote healthy growth and green color. You can apply a balanced fertilizer with a ratio of 10-10-10 (nitrogen-phosphorus-potassium) once a month.
How often should I fertilize my St Augustine grass in the summer?
Fertilizing your St Augustine grass too frequently can lead to burned lawns. To avoid this, apply a fertilizer once a month during the growing season. However, if your lawn is under stress due to extreme weather conditions or pests, you may need to apply a fertilizer more frequently. It's essential to follow the instructions on the fertilizer package and to avoid over-fertilizing.
Can I use a weed and feed fertilizer on my St Augustine grass in the summer?
While it may be tempting to use a weed and feed fertilizer to control weeds and fertilize your lawn at the same time, I would advise against it. Weed and feed fertilizers can be too harsh for St Augustine grass, causing burn spots and uneven growth. Instead, use a separate fertilizer specifically formulated for St Augustine grass, and apply a weed killer separately to control weeds.
What is the difference between a slow-release and quick-release fertilizer?
The main difference between a slow-release and quick-release fertilizer is how they release their nutrients into the soil. Slow-release fertilizers release nutrients over a longer period, typically 4-6 weeks, while quick-release fertilizers release nutrients quickly, often within 1-2 weeks. Slow-release fertilizers are generally better for St Augustine grass, as they provide a more consistent supply of nutrients.
Can I use a fertilizer with high nitrogen content on my St Augustine grass in the summer?
Using a fertilizer with high nitrogen content on your St Augustine grass in the summer can lead to excessive growth, which can make your lawn more susceptible to pests and diseases. Instead, look for a balanced fertilizer with a ratio of 10-10-10 or 15-0-15 (nitrogen-phosphorus-potassium). These fertilizers provide a more balanced supply of nutrients, promoting healthy growth and disease resistance.
