Maintaining healthy St. Augustine grass requires effective fungicides and complementary lawn care solutions. Diseases like brown patch and leaf spot can affect its lush appearance. This guide covers the best fungicides, weed killers, and grass plugs suited for St. Augustine grass to help protect, repair, and feed your lawn.
| Product | Type | Key Feature |
|---|---|---|
| Scotts Turf Builder Healthy Plus Lawn Food | Fungicide + Fertilizer | Controls 27 lawn diseases including brown patch |
| Southern Ag Atrazine St. Augustine Grass Weed Killer | Weed Killer | Kills broadleaf weeds and suppresses crabgrass |
| LESCO St. Augustine Grass Weed and Feed | Weed & Feed Fertilizer | Slow release feeding plus weed control |
| SodPods® St. Augustine Palmetto Grass Plugs | Grass Plugs | Premium sod plugs for lawn repair |
| Palmetto St. Augustine Grass Plugs | Grass Plugs | Good shade and salt tolerance for various soils |
Scotts Turf Builder Healthy Plus Fungicide and Fertilizer
Scotts Turf Builder Healthy Plus Lawn Food combines lawn fertilizer with a broad-spectrum, systemic fungicide. It is designed to prevent and control up to 27 types of lawn diseases such as brown patch, leaf spot, powdery mildew, and red thread. This product helps St. Augustine grass withstand stress from summer heat or other adverse conditions. Applying it before the onset of symptoms offers the best protection and aids in the lawn’s recovery. The broad coverage makes it suitable for medium-sized yards.
Southern Ag Atrazine St. Augustine Grass Weed Killer 1 Gallon
Southern Ag Atrazine is a targeted weed killer formulated especially for St. Augustine and centipede grass. It effectively kills various broadleaf weeds that compete with your lawn. The formula also offers some control over crabgrass, providing suppression rather than full elimination. This weed killer aids in maintaining a healthy, weed-free lawn foundation, which is crucial for fungus prevention. Atrazine’s selective action enables safe application without excessive damage to your grass.
LESCO 50 lb. St. Augustine Grass Weed and Feed
LESCO offers a professional-grade weed and feed product specifically formulated for St. Augustine grass. The blend features a slow-release fertilizer with 17-0-17 nutrients combined with Penoxsulam herbicide. The product feeds your lawn for up to 8 weeks and controls weeds effectively. It is safe on Floratam variety and requires turf to be wet during application to optimize absorption. This formula supports robust growth while minimizing weed and fungal stress.
SodPods® St. Augustine Palmetto Grass Plugs for Lawn Repair (32-Count)
These SodPods® Palmetto plugs are ideal for repairing damaged areas and thickening St. Augustine lawns. Each 32-count pack contains 3” x 3” pods with a premium texture showcasing soft, broad blades and dense, carpet-like growth. Once matured, they cover about 72 sq. ft. when spaced 18 inches apart. Palmetto variety is known for its excellent shade tolerance, making it suitable for partially shaded yards that struggle with disease problems from fungal buildup in dense conditions.
Palmetto St. Augustine Grass Plugs
Palmetto St. Augustine grass plugs offer superior adaptation to various soils with excellent shade and salt tolerance. These qualities make them a trustworthy choice for lawn areas affected by coastal or shaded conditions where fungus might thrive. Using plugs helps replace thin or diseased patches, improving lawn uniformity and reducing fungal risk by enhancing grass health and vigor through new growth.
Buying Guide for Fungicide and Lawn Care for St. Augustine Grass
Choosing the right fungicide or lawn care product for St. Augustine grass depends on several factors. Consider the following when making your selection:
- Lawn Size and Coverage: Ensure the product quantity matches your lawn’s square footage for effective treatment without overuse.
- Target Issues: Determine if you need broad fungus protection, weed control, fertilization, or lawn repair with plugs to address damage.
- Grass Variety: Some products specify compatibility with Floratam, Palmetto, or other varieties of St. Augustine grass.
- Application Conditions: Check if treatments require wet grass, specific time of year, or weather conditions for best results.
- Safety and Environmental Impact: Look for products that balance effectiveness with minimal toxicity to non-target plants and beneficial insects.
- Resistance and Disease Spectrum: Prefer fungicides covering multiple diseases common to your region’s climate (brown patch, leaf spot, etc.).
- Lawn Repair Needs: For damaged lawns, consider grass plugs for patching alongside fungicides to foster stronger new growth.
Proper lawn care combines preventive fungicide treatment, weed control, adequate fertilization, and repairing damaged areas to maintain your St. Augustine grass lush and disease-free throughout the seasons.