Choosing the right fertilizer for St. Augustine grass in winter helps maintain color and health through cooler months. This guide highlights top products designed for St. Augustine lawns, focusing on slow-release formulas, iron content for greening, and weed control features. Read on to compare options and find the best fit for your yard.
| Product | Brand | Key Benefit | Coverage (approx.) |
|---|---|---|---|
| Sunniland St. Augustine Weed & Feed | Generic | Easy to spread; spring and fall applications | 5000 sq ft |
| SeedRanch St. Augustine Lawn 24-2-11 | Lesco | Includes iron for greening; sturdy nutrients | ≈12,000 sq ft |
| LESCO 50 lb St. Augustine Weed & Feed | LESCO | Specially formulated for St. Augustine; slow-release | ≈13,000 sq ft |
| Scotts Turf Builder Southern Lawn | Scotts | All-in-One nutrition for heat/drought resilience | ≈5,000 sq ft |
| Emerald 10-0-20 Lawn Fertilizer | Lawn Synergy | Slow-release with micronutrients and iron | 25 lb bag (various coverage) |
Sunniland St. Augustine Weed & Feed Lawn Fertilizer
Sunniland St. Augustine Weed & Feed is designed for St. Augustine grasses with an easy-to-spread granular formula. It supports preventive weed control while delivering nutrients for spring and fall applications. The product is suitable for use on all St. Augustine varieties, helping maintain lawn density and color during transitional seasons.
SeedRanch St. Augustine Lawn Fertilizer
SeedRanch St. Augustine Lawn 24-2-11 Fertilizer includes iron to promote vibrant greening and is designed to cover large areas (≈12,000 sq ft). It provides balanced nutrients tuned for St. Augustine grasses, supporting overall lawn health through cooler periods.
LESCO 50 lb St. Augustine Weed & Feed
LESCO 50 lb St. Augustine Weed & Feed is a professional-grade formula designed for St. Augustine turf. It includes 17-0-17 with slow-release nitrogen and coated urea components. It aims to provide long-lasting feeding while helping control common weeds, and is suitable for Floratam varieties when used as directed.
Scotts Turf Builder Southern Lawn Fertilizer
Scotts Turf Builder Southern Lawn Fertilizer is formulated for Southern lawns, including St. Augustine. It features All-in-One particles to promote deep root growth and resilience against heat and drought. It can be applied on wet or dry lawns during the growing season, offering flexible use in milder winter windows.
Emerald 10-0-20 Lawn Fertilizer
Emerald 10-0-20 Fertilizer delivers 45% slow-release nitrogen with AccuBlu technology and micronutrients, including iron, to produce a rich green color without excessive growth. The potassium-rich formula supports drought and stress resistance, making it suitable for warm-season grasses like St. Augustine during winter stress periods.
Buying Guide
- Nutrient balance: For St. Augustine, look for nitrogen-rich formulas with slow-release components to minimize growth bursts and extend feeding intervals.
- Iron and greening: Iron helps achieve a deeper green, but ensure it is balanced with proper nitrogen to avoid excessive lush growth.
- Weed control: Pre- or post-emergent weed control in winter can help reduce crabgrass and other annual weeds when used as directed.
- Application timing: In temperate regions, apply during mild days in late fall or early spring, avoiding extreme cold or heat.
- Penoxsulam and specialty blends: Some products include herbicides for weed control; use only if weeds are present and follow label guidance for St. Augustine grass.
- Coverage and bag size: Choose a product that matches your lawn size. Larger areas benefit from concentrated, slow-release products.
- Safety and environment: Opt for organic or safer synthetic options if pets or children frequent the lawn. Read labels for safe use around wildlife and during lawn renovation.