Fall feeding can help St. Augustine lawns recover from summer stress and prepare for the next growing season. The right mix supports green color, root development, and overall turf health without encouraging excessive top growth. This guide highlights five fall fertilizers tailored for St. Augustine grasses, with emphasis on balanced nutrients, ease of application, and soil and climate resiliency.
| Product | Brand | Type | Coverage / Size |
|---|---|---|---|
| Scotts Turf Builder WinterGuard Fall Lawn Fertilizer | Scotts | Fall lawn fertilizer | 4,000 sq. ft., 10 lbs |
| Sunniland St.Augustine Weed & Feed Lawn Fertilizer | Generic | Weed & feed for St. Augustine | 5,000 sq. ft. |
| TPS Plant Foods — Liquid St. Augustine Grass Fertilizer | TPS NUTRIENTS | Liquid fertilizer | 1 gallon |
| 10-0-20 Emerald Lawn Fertilizer | Lawn Synergy | Slow-release NPK lawn fertilizer | 50 lbs |
| Green Thumb Winterizer Lawn Fertilizer | Green Thumb | Winterizer fertilizer | 5,000 sq. ft. |
Note: The products above are selected for compatibility with St. Augustine grass and fall feeding windows, aiming to support root growth, color, and resilience. Consult label directions for application rates and regional guidance.
Scotts Turf Builder WinterGuard Fall Lawn Fertilizer
Scotts Turf Builder WinterGuard Fall Lawn Food is designed to build strong, deep roots and support recovery after summer heat, drought, or activity. It applies to wet or dry lawns in fall, aligning with the ideal feeding window to promote a robust lawn next spring. The formula focuses on nutrient delivery that boosts root systems and overall turf health without overstimulating top growth.
Sunniland St.Augustine Weed & Feed Lawn Fertilizer
This product offers a straightforward weed control and feeding option suitable for St. Augustine grasses. With easy-to-spread granules and separate spring and fall applications, it supports weed suppression while promoting healthy turf. It’s compatible with all St. Augustine varieties, aiding robust growth and color during the cooler months.
St Augustine Grass Fertilizer, Liquid by TPS Plant Foods (1 Gallon)
TPS Plant Foods Liquid St. Augustine Grass Fertilizer is formulated to support healthy growth with balanced nutrition. It emphasizes thick growth, vibrant green color, and stronger roots, delivering essential nutrients without overfeeding or causing lawn stress. The liquid form allows flexible application and rapid nutrient uptake for warm-season lawns.
St Augustine Grass Fertilizer, Liquid (32 oz) by TPS Plant Foods
This 32-ounce TPS Plant Foods liquid fertilizer is designed for St. Augustine lawns, promoting thick growth, rich green color, and balanced nutrition. It supports warm-season turf by delivering essential nutrients without risk of buildup, making it suitable for regular fall applications when weather conditions allow.
St Augustine Grass Fertilizer, Liquid (8 oz) by TPS Plant Foods
This 8-ounce TPS Plant Foods liquid product offers a compact option for targeted feeding of St. Augustine lawns. It emphasizes balanced nutrients for thick growth and healthy color, designed to minimize lawn stress and support steady growth during the fall season.
10-0-20 Emerald Lawn Fertilizer
Emerald Lawn Fertilizer combines slow-release nitrogen with iron and micronutrients to deliver a rich, deep green color without excessive growth. The 10-0-20 ratio supports warm-season grasses like St. Augustine by providing steady nutrition and improved drought tolerance, disease resistance, and root strength over several weeks.
Green Thumb Winterizer Lawn Fertilizer
Green Thumb Winterizer is designed to help lawns withstand winter stress while promoting a strong, deeper root system. It’s positioned as a practical option for fall and early winter feeding, supporting resilience and long-term lawn health as temperatures drop.
Buying Guide: Fall Fertilizer For St. Augustine Lawns
- Nutrition balance: Look for blends with a mix of nitrogen, phosphorus, and potassium appropriate for warm-season grasses. A formula with low to moderate nitrogen in fall can promote root growth without triggering rapid above-ground growth.
- Form factor: Granular products are often suited for steady release, while liquid options enable precise dosing and rapid uptake. Choose based on application preferences and lawn size.
- Winter readiness: Fall fertilizers should bolster roots and color heading into cooler months, enhancing spring vigor. Avoid excessive late-season fertilization that could stress the lawn if temperatures drop quickly.
- Weed control: If weed suppression is a goal, select products that include a selective herbicide for St. Augustine grasses, but verify compatibility with your lawn variety and local regulations.
- Application timing and schedule: Align fertilizer timing with local climate and turf growth cycles. Fall feeding windows typically follow the peak heat period, allowing roots to establish before winter dormancy.
- Watering requirements: Some products are labeled for wet or dry lawn application, which can impact timing and mowing schedules. Follow product directions for best results and environmental considerations.
- Long-term health: Consider products that support root development and nutrient density without encouraging lawn stress, which helps reduce susceptibility to heat and drought later in the season.
- Environmental impact: Use slow-release formulations where possible to minimize nutrient runoff and maximize uptake by the root system.