The search for a lawn solution tailored to St Augustine grass often centers on organic options that nourish the turf without harsh chemicals. This guide reviews five Amazon-listed products commonly used with St Augustine lawns, highlighting organic ingredients, application notes, and performance considerations. Each entry includes key features to help you compare options for safety, longevity, and suitability across seasons.
| Product | Brand | Type | Notes |
|---|---|---|---|
| Organic Plant Magic – Truly Organic™ Slow Release Granular Lawn Fertilizer | Organic Plant Magic | Organic, Slow Release | GroBiotics enriched; safe for kids and pets; all-purpose lawn care |
| Espoma Organic All Season Lawn Food 9-0-0 | Espoma | Organic, All-Natural | Bio-tone formula; long-lasting nitrogen; versatile for all lawns |
| Fertilome St. Augustine Weed & Feed 15-0-4 | ferti-lome | Hybrid (Weed & Feed) | Pre- and post-emergent weed control; suited for St. Augustine |
| LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam | LESCO | Weed & Feed | Targeted for St. Augustine; slow-release with up to 8 weeks feeding |
| Scotts Turf Builder Lawn Food | Scotts | All-Grass Fertilizer | Strengthens roots; improves water/nutrient absorption |
Note: The table summarizes product type and key considerations. Always follow label directions for St Augustine lawns and local regulations regarding herbicide use.
Organic Plant Magic – Truly Organic Lawn Fertilizer
Brand: Organic Plant Magic
Type / Formulation: Organic, Slow Release Granules
Key Features: TRULY ORGANIC YOU CAN TRUST — GroBiotics️ with Amino & Humic Acids and beneficial biology; SAFE FOR KIDS, PETS & THE ENVIRONMENT; ALL PURPOSE for lawns, seed starting, and sod installation
The product emphasizes a living, organic approach to lawn nutrition, aiming to improve soil biology while providing steady nutrient release. For St Augustine lawns, this option can support green color and turf recovery without synthetic additives.
Fertilome St. Augustine Weed & Feed 15-0-4
Brand: ferti-lome
Type / Formulation: Weed & Feed (Pre-emergent and Post-emergent Herbicide with 15-0-4 fertilizer)
Key Features: Designed for Centipede, Zoysia, and St. Augustine lawns; can control some weeds while providing a balanced fertilizer mix; not suitable for Bermuda or certain northern grasses
This product targets weed control alongside a specific spring/fall feeding cycle. When using weed-and-feed products on St Augustine, ensure compatibility with your lawn variety and follow application timing to avoid stressing the turf.
LESCO 50 lb. St. Augustine Grass Weed and Feed
Brand: LESCO
Type / Formulation: Weed & Feed with Penoxsulam; slow release
Key Features: 50 lb bag; designed for St. Augustine turf; provides up to 8 weeks of feeding; safety for Floratam variety; shoulders heavy feed and weed control with a polymer-coated, slow-release approach
LESCO’s product focuses on robust weed management for St Augustine while delivering sustained nutrition, helping to maintain turf density and vigor through active growing periods.
Sunniland Weed & Feed 20-0-6 Lawn Fertilizer
Brand: Generic
Type / Formulation: Weed & Feed; 20-0-6
Key Features: Easy to spread; two applications per year; suitable for all St Augustine types; combines weed control with fertilization
Weed-and-feed products can simplify lawn management by combining two essential tasks. For St Augustine grasses, confirm weed spectrum and application windows to match local weed cycles and avoid harming non-target species.
SeedRanch St. Augustine Lawn 24-2-11
Brand: Lesco
Type / Formulation: 24-2-11 Fertilizer
Key Features: Includes 6% Iron for greening; covers up to 12,000 sq ft; provides nutrients tailored for St Augustine lawns
Iron supplementation can enhance leaf color and recovery in St Augustine grasses, while the higher potassium and nitrogen balance supports root and overall vigor during peak growing periods.
Scotts Turf Builder Lawn Food
Brand: Scotts
Type / Formulation: All-Grass Fertilizer
Key Features: Builds strong roots; improves water and nutrient absorption; suited for varied lawn types including St Augustine
Scotts Turf Builder is a general all-grass option that can support St Augustine lawns by enhancing root strength and resilience. Consider pairing with a targeted weed-management strategy if over-seeding or weed pressure is a concern.
Buying Guide
If your priority is an organic approach for St Augustine, prioritize products labeled Organic, Natural, or with organic-certified ingredients. Read labels for nutrient sources (e.g., compost, alfalfa meal, fish emulsion) and slow-release mechanisms. Look for slow-release nitrogen to minimize burn risk and provide even green-up over weeks or months. For St Augustine, balanced N-P-K values (e.g., modest phosphorus, essential potassium) support root development. Weed-and-feed products combine herbicides with fertilizer. Verify the weeds treated and ensure compatibility with St Augustine varieties. Some products are not suitable for certain grass types. Early spring and fall are common windows for feeding St Augustine. Avoid peak heat or drought stress periods, and align applications with local climate patterns. For organic options, consider soil microbial benefits and humic acids. GroBiotics or Bio-tone-type formulations can improve soil biology and nutrient uptake. Use the correct spreader settings to ensure uniform coverage. Apply over evenly moist soil or as directed, and water lightly after application if recommended. Choose products with non-toxic ingredients where kids and pets access the lawn. Follow safety guidelines and disposal instructions for bagged fertilizers. Some products are specifically formulated for Floratam or other St Augustine varieties; verify compatibility with your cultivar to avoid adverse effects.
When choosing among these options, consider whether you want an organic approach with soil biology benefits or a weed-and-feed solution to manage pests while feeding. For organic preferents, Organic Plant Magic and Espoma Organic All Season Lawn Food offer evidence-backed organic inputs and longer-lasting nitrogen release, which can be gentler on established St Augustine lawns. For weed management alongside fertilizer needs, Loyally paired products like Fertilome, LESCO, Sunniland, and Scotts can provide targeted weed control in addition to feeding, but always check labels for compatibility with your specific St Augustine cultivar and local guidelines.