Choosing the right fertilizer for San Augustine grass can help establish a lush, resilient lawn. The following selections emphasize feeding balance, iron timing, weed control, and nutrient availability tailored to St. Augustine varieties. This guide highlights practical use, coverage, and compatibility to help you decide which product fits your yard’s needs and climate. Below is a concise comparison, followed by in-depth reviews and a practical buying guide.
| Product | Brand | Key Benefits |
|---|---|---|
| LESCO 50 lb. St. Augustine Weed and Feed | LESCO | St. Augustine-compatible, slow-release, weed control, Floratam-safe |
| SeedRanch St. Augustine Lawn 24-2-11 | Lesco | Balanced NPK, includes iron for greening |
| Sunniland Weed & Feed 20-0-6 | Generic | Two-season application, easy to spread |
| Scotts Green Max Lawn Food with Iron | Scotts | Dual-action fertilizer + iron for rapid greening |
| Scotts Turf Builder Lawn Food (All Grass Types) | Scotts | All-grass compatibility, strong root development |
Lesco 50 lb St. Augustine Weed and Feed
The Lesco 50 lb St. Augustine Weed and Feed is designed specifically for St. Augustine turf. It uses a 17-0-17 ratio with a slow-release formulation and a sulfur-coated urea component to extend feeding up to eight weeks. The product is formulated to be applied when the turf is wet, then allowed to dry, with results typically visible in about two weeks. Its formulation includes components that are safe for the Floratam variety and aims to improve weed suppression while nourishing the lawn. This option is best for homeowners seeking a combined weed control and feeding solution in one application.
Key considerations include rotation with follow-up watering and timing aligned with active growth in your region. The product supports gradual feeding, which helps reduce nutrient flush and potential thatch buildup. Users should monitor for any signs of stress after application and adjust watering schedules accordingly to maintain soil moisture balance.
SeedRanch St. Augustine Lawn 24-2-11 Fertilizer
The SeedRanch St. Augustine Lawn 24-2-11 fertilizer focuses on balanced nutrition for St. Augustine turf. The 24-2-11 formulation provides essential nitrogen, phosphorus, and potassium to support growth, root development, and overall turf health. With added iron (in some variants) for greening, this product is suitable for improving lawn vigor while maintaining a steady release profile to minimize sudden nutrient spikes. Coverage is typically described per bag, with enough material to treat large lawn areas.
Practical use includes applying during the growing season and watering as recommended to help lock nutrients into the root zone. For best results, align applications with soil temperatures and avoid periods of extreme heat or drought. Regular, moderate feeding combined with proper mowing height helps create a resilient St. Augustine lawn capable of resisting common stressors.
Sunniland Weed & Feed 20-0-6 Lawn Fertilizer
The Sunniland Weed & Feed 20-0-6 fertilizer is designed for St. Augustine lawns and emphasizes weed control alongside feeding. With a 20-0-6 nutrient ratio and a 5,000 sq. ft. coverage scope per bag, it provides a straightforward approach to lawn maintenance. The product is marketed as easy to spread and handle, with two applications in spring and fall. It is suitable for a variety of St. Augustine grasses, and its formulation targets common weed species while promoting healthy turf growth.
When using weed-and-feed products, timing is critical to maximize weed suppression while avoiding damage to desirable turf. Always adhere to label directions regarding application rates and irrigation. Consider local climate and seasonal weed cycles to optimize effectiveness without over-fertilizing or causing nutrient runoff.
Scotts Green Max Lawn Food with Iron
The Scotts Green Max Lawn Food is a dual-action product that feeds the lawn while delivering iron to promote quick greening. The 16.67 lb bag covers a 5,000 sq. ft. area and includes 5% iron to enhance color and health. This option is compatible with most grass types, including St. Augustine, and aims to provide visible results within a short timeframe—often within three days of application when watering and mowing conditions are appropriate.
Consider using Green Max during active growing periods in spring or fall when turf can easily absorb nutrients. The iron component supports deep greening, which can be particularly appealing in lawns with lighter color tones or seasonal stress. Proper irrigation after application helps move nutrients into the root zone and reduces the risk of leaf burn in dry conditions.
Scotts Turf Builder Lawn Food (All Grass Types)
The Scotts Turf Builder Lawn Food is designed for all grass types, including St. Augustine. It focuses on building strong roots and improving the lawn’s capacity to absorb water and nutrients. The 12.5 lb bag provides targeted feeding that supports growth, resilience, and health during the growing season. It is flexible for various climates and is suitable for both wet and dry lawn conditions, though adherence to application guidelines remains essential for best results.
For optimal outcomes, pair this product with regular mowing at the recommended height for St. Augustine and maintain consistent irrigation. This approach enhances root structure and overall turf vigor, which helps the lawn better withstand heat, drought, and common stressors in southern climates.
Buying Guide: Key Growth and Application Considerations
When selecting a fertilizer for San Augustine grass, consider these core factors to tailor products to your lawn’s needs:
- Grass type and compatibility: Ensure the product is suitable for St. Augustine varieties, including Floratam, to avoid toxicity or poor performance.
- NPK balance: For St. Augustine, balanced or slightly high nitrogen (N) formulas support turf growth, while phosphorus (P) and potassium (K) influence root development and stress tolerance.
- Feeding timing: Align applications with the growing season and local climate. Avoid extreme heat periods and consider slow-release formulas to minimize burn and runoff.
- Weed control vs. fertilizer: Weed-and-feed products can simplify maintenance but require careful timing to prevent harming the grass or attracting a poor weed response.
- Iron content and greening: Iron-rich formulas produce faster greening, but may lead to temporary color changes if overapplied or under-watered.
- Coverage and application rate: Match bag coverage to lawn size, and adjust for irregular lawns or slopes to ensure even distribution.
- Watering after application: Proper irrigation helps move nutrients into the root zone, but avoid overwatering that can leach nutrients away.
- Soil condition: Conduct a soil test if possible to refine your fertilizer strategy, especially to address pH and nutrient availability in your region.
Practical tips for best results include staggering applications to avoid nutrient overload, maintaining a consistent mowing height (often around 2.5 to 3 inches for St. Augustine), and monitoring for weed species that may require different management approaches. Always read label instructions for local recommendations, application rates, and safety considerations.