The Best Fungicide for Brown Patch is essential for maintaining a healthy, green lawn during warm and humid seasons. Brown patch, caused by the fungus Rhizoctonia solani, can spread rapidly, creating unsightly dead zones and weakening your turfgrass.
Using the best fungicide for brown patch not only stops the disease in its tracks but also prevents future outbreaks when applied correctly and timely.
From systemic options like Propiconazole to organic solutions like copper-based sprays, choosing the right treatment depends on your grass type, climate, and severity of the infection.
This comprehensive guide reviews the 10 best fungicides for brown patch, highlights their strengths, active ingredients, and application methods, and provides expert tips for choosing the most effective solution.
10 Best Fungicide For Brown Patch
1. Heritage G Fungicide – Best Granular Fungicide for Long-Term Protection
Heritage G Fungicide is a premium granular fungicide designed for long-term brown patch control. The active ingredient, Azoxystrobin, provides systemic protection, ensuring deep penetration into the grass. It effectively prevents and treats brown patch, dollar spot, and other turf diseases while promoting healthier grass growth.
This brown patch fungicide is easy to apply with a spreader, making it an excellent choice for large lawns. Its granular formulation ensures slow-release action, delivering consistent disease control for up to 28 days. Heritage G is rainproof, reducing the need for frequent reapplications.
Users appreciate its long-lasting protection and ease of use. It works well on all major turfgrass types, including Bermuda, Fescue, and Zoysia. If you need a granular fungicide with extended coverage, Heritage G is an outstanding choice.
Pros:
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Long-lasting slow-release formula
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Systemic disease protection
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Easy granular application
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Effective against multiple turf diseases
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Works on various grass types
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Rainproof
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Promotes healthier grass growth
Cons:
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Higher price point
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Requires a spreader for even application
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Can take time to show visible results
2. Eagle 20EW Fungicide – Best Preventive Fungicide for Brown Patch
Eagle 20EW Fungicide is a highly effective systemic fungicide formulated to prevent and control brown patch. The active ingredient, Myclobutanil, works by inhibiting fungal growth and spreading throughout the plant for maximum protection. This liquid fungicide is popular for its preventive properties, making it ideal for proactive lawn care.
This brown patch fungicide is easy to mix and apply with a sprayer. It offers long-term disease prevention, lasting up to four weeks per application. It is also effective against dollar spot, powdery mildew, and rust, making it a versatile lawn care solution.
Users appreciate its reliability and strong preventive action. It is compatible with various turf types, including bluegrass, ryegrass, and fescue. If you’re looking for a high-quality preventive fungicide for brown patch, Eagle 20EW is an excellent option.
Pros:
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Strong preventive properties
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Systemic action for deep penetration
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Long-lasting protection
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Effective against multiple turf diseases
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Works on various grass types
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Easy liquid application
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Versatile lawn care solution
Cons:
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Requires precise dilution
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Not safe for edible plants
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Can cause turf discoloration if overapplied
3. BioAdvanced Fungus Control for Lawns – Best Systemic Fungicide for Brown Patch
BioAdvanced Fungus Control for Lawns offers systemic protection against brown patch and other common lawn diseases. The active ingredient, Propiconazole, penetrates the grass blades to stop fungal growth from within. This ready-to-spray formula is convenient for homeowners seeking an easy application method.
This brown patch fungicide provides up to 30 days of protection per application. It controls a broad spectrum of diseases, including dollar spot, rust, and red thread. The weatherproof formula ensures lasting effectiveness even after rainfall.
Users find it effective and user-friendly, especially for routine lawn maintenance. It is suitable for various grass types, including Kentucky bluegrass, fescue, and ryegrass. For those seeking a reliable systemic fungicide, BioAdvanced is a solid choice.
Pros:
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Systemic disease control
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Easy hose-end application
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Broad-spectrum effectiveness
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Weatherproof formula
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Suitable for various grasses
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Long-lasting protection
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User-friendly
Cons:
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May require multiple applications
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Not organic
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Potential for overuse
4. Scotts DiseaseEx Lawn Fungicide – Best Fast-Acting Brown Patch Treatment
Scotts DiseaseEx Lawn Fungicide is designed for rapid action against brown patch and other lawn diseases. The active ingredient, Azoxystrobin, provides systemic protection, halting disease progression quickly. Its granular form allows for easy application with a spreader.
This brown patch fungicide begins working within 24 hours of application. It offers up to four weeks of disease control, making it suitable for both preventive and curative use. The product is effective on various grass types, including Bermuda, Zoysia, and Fescue.
Users appreciate its quick results and ease of use. It’s an excellent option for homeowners needing immediate disease intervention. For fast-acting brown patch treatment, Scotts DiseaseEx is a top contender.
Pros:
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Rapid disease control
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Systemic protection
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Easy granular application
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Effective on multiple grasses
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Suitable for prevention and cure
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Up to 4 weeks control
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Trusted brand
Cons:
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Requires spreader
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Not organic
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May need reapplication
5. Pillar G Intrinsic Fungicide – Best Dual-Action Brown Patch Fungicide
Pillar G Intrinsic Fungicide combines two active ingredients, Pyraclostrobin and Triticonazole, for broad-spectrum disease control. This dual-action formula provides both preventive and curative effects against brown patch. Its granular form ensures easy application across large lawn areas.
This brown patch fungicide offers up to 28 days of protection per application. It also promotes plant health benefits, such as improved root growth and stress tolerance. The product is effective on various turfgrass species, including St. Augustine and Zoysia.
Users value its comprehensive disease control and added plant health benefits. It’s ideal for those seeking both disease management and lawn vitality. For dual-action brown patch treatment, Pillar G Intrinsic is a superior choice.
Pros:
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Dual active ingredients
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Preventive and curative
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Promotes plant health
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Easy granular application
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Long-lasting protection
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Effective on multiple grasses
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Enhances root growth
Cons:
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Higher cost
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Requires spreader
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Not organic
6. Bonide Infuse Systemic Disease Control – Best Versatile Brown Patch Fungicide
Bonide Infuse Systemic Disease Control offers broad-spectrum disease management for lawns and ornamentals. The active ingredient, Propiconazole, provides systemic protection against brown patch and other fungal diseases. This concentrate is mixed with water and applied using a sprayer.
This brown patch fungicide delivers up to four weeks of disease control per application. It’s effective on various plants, including trees, shrubs, and flowers, making it a versatile garden solution. The product also promotes turf rooting and improves color in woody shrubs.
Users appreciate its versatility and effectiveness across different plant types. It’s suitable for homeowners seeking a multi-purpose fungicide. For comprehensive brown patch and garden disease control, Bonide Infuse is an excellent option.
Pros:
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Systemic disease control
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Versatile application
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Promotes turf rooting
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Improves plant color
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Effective on various plants
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Long-lasting protection
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Easy to mix
Cons:
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Shorter residual effect
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inorganic
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frequent reapplication is vital
7. Spectracide Immunox Lawn Disease Control – Best Budget-Friendly Brown Patch Fungicide
Spectracide Immunox Lawn Disease Control is a cost-effective liquid fungicide that delivers powerful results against brown patch.
Its active ingredient, Myclobutanil, works systemically to protect grass from within, ensuring long-term disease resistance.
This brown patch fungicide is rainproof within hours and protects lawns for up to two weeks with a single application.
It is ideal for homeowners seeking reliable disease control at an affordable price point.
It also controls rust, powdery mildew, and other common turf diseases, making it highly versatile.
Spectracide is compatible with most turfgrass varieties including bluegrass, Bermuda, and ryegrass.
Users find this product efficient for budget-conscious lawn care without compromising effectiveness.
Its ready-to-spray feature simplifies application and saves time.
If you’re looking for a powerful brown patch fungicide on a tight budget, Spectracide Immunox is a great choice.
Pros:
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Affordable price
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Systemic action
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Rainproof in hours
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Easy spray application
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Effective against many diseases
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Quick visible results
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Works on various grasses
Cons:
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Shorter residual control
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Not organic
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May require frequent reapplication
8. Southern Ag Liquid Copper Fungicide – Best Organic Option for Brown Patch
Southern Ag Liquid Copper Fungicide is a copper-based solution favored for organic gardening and eco-conscious lawn care.
Its active ingredient, Copper Ammonia Complex, naturally combats fungal diseases like brown patch without synthetic chemicals.
This brown patch fungicide is ideal for those seeking a more environmentally friendly lawn treatment.
It is effective on lawns, vegetables, fruits, and ornamentals, adding flexibility to your lawn care toolkit.
It must be mixed with water and applied using a sprayer for uniform coverage.
Liquid Copper is rainfast once dried, offering dependable disease protection.
Users value its natural formulation and minimal environmental impact.
It’s particularly useful in organic garden setups or for areas where children and pets play.
For an organic brown patch solution, Southern Ag Liquid Copper is the top pick.
Pros:
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Organic and eco-friendly
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Effective disease control
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Safe for edible plants
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Works on multiple plants
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Rainfast once dry
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Suitable for sensitive environments
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Minimal toxicity
Cons:
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Requires careful mixing
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May stain surfaces
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Less residual control
9. Propiconazole 14.3 Fungicide – Best Professional-Grade Brown Patch Treatment
Propiconazole 14.3 Fungicide is a professional-grade solution trusted by turf managers, landscapers, and golf course crews.
Its high concentration of Propiconazole delivers exceptional systemic protection against brown patch and other serious turf diseases.
This brown patch fungicide is designed for long-lasting control, often providing 3–4 weeks of protection per application.
It’s highly effective on cool- and warm-season grasses, making it a versatile tool for any climate.
Dilution and sprayer application are required, giving full control over coverage and concentration.
It also helps manage rust, anthracnose, and leaf spot.
Users praise its durability and effectiveness even in high-pressure environments like athletic fields.
Although more technical to use, its power makes it worth the effort for serious lawn care needs.
For maximum-strength brown patch control, Propiconazole 14.3 is unmatched.
Pros:
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Strong systemic action
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Long-lasting protection
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Professional-grade formula
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Controls many turf diseases
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Excellent turf compatibility
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Customizable concentration
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High effectiveness
Cons:
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Requires sprayer
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Technical mixing needed
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Not for casual users
10. Serenade Garden AGRSER32 – Best Biofungicide for Brown Patch
Serenade Garden AGRSER32 is a biofungicide made from beneficial bacteria (Bacillus subtilis), making it a safe, non-toxic option for lawns.
It prevents and controls brown patch by attacking fungi through microbial activity without harming the soil ecosystem.
This brown patch fungicide is OMRI-listed and safe for organic gardening, children, pets, and wildlife.
It is applied as a liquid spray and is rainproof after drying, offering reliable disease protection in all weather conditions.
It also works against leaf spot, blight, powdery mildew, and rust.
Serenade helps enhance soil health and encourages beneficial microbial populations.
Users appreciate its safety and ability to integrate with other natural lawn care routines.
It’s perfect for sustainable lawn practices where chemical use is limited.
If you prefer a non-toxic and environmentally safe brown patch solution, Serenade is the ideal choice.
Pros:
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OMRI organic certified
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Safe for pets and kids
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Enhances soil health
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Works against many diseases
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Non-toxic and eco-friendly
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Easy to apply
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Rainproof after drying
Cons:
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Shorter protection window
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May need frequent use
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Slower visible results
Best Fungicide for Brown Patch FAQs
1. What is the best fungicide for brown patch in St. Augustine grass?
The best fungicide for brown patch in St. Augustine grass is Scotts DiseaseEx Lawn Fungicide. It provides fast action and broad-spectrum protection, making it ideal for preventing and treating brown patch in warm-season grasses like St. Augustine.
2. How often should I apply fungicide for brown patch lawn disease?
Most brown patch fungicides should be applied every 14 to 21 days during periods of high humidity and temperatures between 70°F–90°F. Always follow the product’s label for exact timing and rates to ensure effective brown patch control.
3. Can I use organic fungicides to treat brown patch in my lawn?
Yes, organic fungicides like Southern Ag Liquid Copper and Serenade Garden AGRSER32 are effective in treating brown patch naturally. These products are safe for pets, children, and beneficial soil microbes.
4. What active ingredients are most effective in brown patch fungicides?
The most effective active ingredients for brown patch include Propiconazole, Azoxystrobin, Fluoxastrobin, and Myclobutanil. These systemic ingredients offer curative and preventive action against Rhizoctonia solani, the fungus that causes brown patch.
5. When is the best time to apply fungicide for brown patch prevention?
Apply fungicide before brown patch symptoms appear, typically in late spring or early fall when conditions are warm and humid. Preventive applications are more effective than curative ones in managing brown patch outbreaks.
6. Can brown patch fungicides be used on all types of grass?
Most brown patch fungicides are labeled for use on Bermuda, St. Augustine, Zoysia, Fescue, Ryegrass, and Bluegrass. Always check the label to ensure the product is safe for your specific lawn type.
7. How long does it take to see results after using fungicide on brown patch?
You can usually see visible results within 3 to 7 days of applying a brown patch fungicide. Full lawn recovery may take 2–3 weeks depending on the severity of the infection and proper cultural practices.
Conclusion
Choosing the best fungicide for brown patch ensures your lawn stays green, healthy, and free from fungal damage. Among all products reviewed, BioAdvanced Fungus Control for Lawns stands out as the overall best due to its powerful Propiconazole formula and long-lasting protection.
The runner-up is Scotts DiseaseEx Lawn Fungicide, which offers fast control and is easy to apply with visible results in just days. Its versatility across grass types and excellent granular spread makes it a favorite for many homeowners.
Both products provide effective protection against various brown patch strains, including those affecting St. Augustine, Bermuda, and Fescue grass. Investing in the best fungicide for brown patch saves your lawn from costly and unsightly damage over time