8 Best Lawn Fungicides of 2024 [Reviews]

If brown spots, discoloration, or dry patches plague your lawn, your grass may suffer from a fungal infection. But there’s no need to fear because we found the best lawn fungicides to treat various fungal lawn diseases. 

We searched America’s top lawn supply retailers (Home Depot, Lowe’s, Amazon, and Walmart) to ensure we cover the full scope of available products. In the end, we found the most effective lawn fungicides and reviewed each in this article. 

Our Top Picks

4 Best Liquid Lawn Fungicides

1. Gravex 20 EW

2. Atticus Artavia 2SC

3. Earth’s Ally Disease Control

4. Spectracide Immunox Fungus plus Insect Control

4 Best Granular Lawn Fungicides

1. Scotts DiseaseEx Lawn Fungicide

2. Lebanon PPZ

3. Pillar G Intrinsic

4. Syngenta Caravan G

Top 4 Liquid Lawn Fungicides – Reviews

1. Gravex 20 EW 

Gravex 20 EW is a broad-spectrum fungicide that effectively eradicates over 38 fungal diseases, including dollar spot, snow mold, and powdery mildew. In addition to providing systemic lawn fungus control, it keeps ornamentals and fruit trees fungus-free. Once applied, it fights against fungal infections for up to 28 days, and it’s the best fungicide we found against dollar spot. 

Specifications

• Active ingredients: Myclobutanil
• Coverage: 10,000 – 16,000  sq. ft.
• Effective period: Up to 28 days
• Form: Liquid
• Size: 16 oz.
• Type: Systemic

Listed Diseases

The product label recommends Gravex 20 EW for treating the following residential turf diseases:

• Blight diseases: Fusarium blight
• Patch diseases: Brown patch, Summer patch
• Snow mold: Pink snow mold
• Spot diseases: Cooper spot, Dollar spot, Gray leaf spot, Leaf spot, Necrotic ring spot, Septoria leaf spot, Zonate leaf spot
• Other diseases: Anthracnose, Crown rot, Lawn rust, Leaf smuts, Melting-out, Powdery mildew, Red thread

Pros and Cons

What we liked	What we didn’t like
✓ Long-lasting ✓ Treats many diseases ✓ Works well in most climates ✓ Easy to mix ✓ Best for dollar spot	✗ Strong odor

2. Atticus Artavia 2SC

Atticus Artavia 2SC provides preventative and curative protection against over 20 lawn diseases and 30 infections that plague ornamentals. Its long-lasting formula is absorbed into grass’s leaves and roots to protect for up to 28 days. Although Gravex 20 EW is the best fungicide against dollar spot, Artavia provides the best leaf spot and melting-out protection. 

Specifications

• Active ingredients: Azoxystrobin
• Coverage: 12,000 – 40,000 sq. ft.
• Effective period: Up to 28 days
• Form: Liquid
• Size: 16 oz.
• Type: Systemic

Listed Diseases

The product label recommends Atticus Artavia 2SC for treating the following turf diseases:

• Blight diseases: Pythium blight, Southern blight
• Patch diseases: Brown patch, Cool weather brown patch, Fusarium patch, Pink patch, Rhizoctonia large patch, Summer patch, Take-all patch, Yellow patch, Zoysia patch
• Snow mold: Gray snow mold, Pink snow mold
• Spot diseases: Gray leaf spot, Leaf spot, Necrotic ring spot, Spring dead spot
• Other diseases: Anthracnose, Melting out, Pythium root rot, Red thread

Pros and Cons

What we liked	What we didn’t like
✓ Long-lasting ✓ Treats many diseases ✓ Best for leaf spot and melting-out ✓ Encourages plant growth	✗ Very toxic to aquatic life if excess runs off into bodies of water

3. Earth’s Ally Disease Control For Organic Lawn Care

Earth’s Ally Disease Control For Organic Lawn Care is our favorite natural fungicide. It kills fungal and bacterial infections on contact without harmful chemicals. In addition to being safe for your lawn, you can use it on trees and shrubs, and it’s OMRI-approved for organic gardening. It’s also super simple to use; just connect the bottle to a garden hose and spray the desired area.

Specifications

• Active ingredients: Citric acid
• Coverage: Up to 5,000 sq. ft.
• Effective period: 7 – 14 days
• Form: Liquid
• Size: 32 oz.
• Type: Contact

Listed Diseases

Earth’s Ally recommends this product to treat the following diseases:

• Blight diseases: Bacterial Blight, Bacterial Leaf and Stem Blight, Early Blight, Fire Blight, Southern Blight
• Patch diseases: Brown Patch, Dollar spot
• Spot diseases: Bacterial Leaf Spot, Bacterial Spot, Black Spot, Copper Spot, Leaf Spot, Septoria Leaf Spot
• Other diseases: Anthracnose, Bacterial Soft Rot, Bacterial Wilt, Black Rot, Downy Mildew, Powdery Mildew, Root rot, Wilt

Pros and Cons

What we liked	What we didn’t like
✓ Eco-friendly ✓ Easy to use ✓ Great against bacterial infections  ✓ Great against mildews	✗ Doesn’t treat snow mold ✗ Not as effective as chemical fungicides against most fungi

4. Spectracide Immunox Fungus Plus Insect Control

Spectracide Immunox Fungus Plus Insect Control is an excellent option for homeowners who want to eliminate insects and diseases with one easy-to-use product. In addition to treating common fungal lawn diseases, its fast-acting insecticide kills over 20 bugs on contact. The ready-to-spray bottle connects to a garden hose, so treating the entire lawn is quick and easy.

Specifications

• Active ingredients: Propiconazole, Lambda-cyhalothrin
• Approximate coverage: Up to 2,500 sq. ft.
• Consistency: Liquid
• Effective period: Up to 2 weeks
• Size: 32 oz.
• Type: Systemic

Listed Diseases

Spectracide recommends Immunox Fungus Plus Insect Control for treating the following lawn diseases:

• Patch diseases: Brown patch, Fusarium patch, Take-all patch, Zoysia patch, Summer patch
• Spot diseases: Dollar spot, Leaf spot, Spring dead spot
• Other diseases: Anthracnose, Melting out, Powdery mildew, Rust, Red thread, Stripe smut

Listed Insects

The product label recommends Spectracide Immunox Fungus Plus Insect Control for controlling the following lawn pest insects:

• Ants 
• Armyworms
• Brown dog ticks
• Cockroaches
• Crickets
• Cutworms
• Fleas
• Millipedes
• Mites
• Mosquitoes
• Palmetto bugs
• Sod webworms
• Sowbugs
• Spittlebugs
• Waterbugs

Pros and Cons

What we liked	What we didn’t like
✓ Protects your lawn against fungus and insects ✓ Easy to use ✓ Rainproof in hours	✗ Doesn’t work against snow mold ✗ Doesn’t work against blight diseases

Top 4 Granular Lawn Fungicides – Reviews

1. Scotts DiseaseEx Lawn Fungicide

Scotts DiseaseEx Lawn Fungicide effectively controls 26 listed lawn diseases, including snow molds, patch diseases, and rust. It both prevents and cures fungal infections and is our favorite granular product against melting out and leaf spot. Its fast-acting formulation starts working within one day and continues preventing diseases for up to 28 days. 

Specifications

• Active ingredients: Azoxystrobin
• Coverage: 2,500 – 5,000 sq. ft.
• Effective period: Up to 28 days
• Form: Granules
• Size: 10 lb.
• Type: Systemic

Listed Diseases

The product label recommends Scotts DiseaseEx Lawn Fungicide for treating the following turf diseases:

• Blight diseases: Pythium blight, Southern blight, and Typhula Blight
• Patch diseases: Brown patch, Fusarium patch, Pink patch, Rhizoctonia large patch, Summer patch, Take-all patch, Yellow patch, Zoysia patch
• Snow mold: Gray snow mold, Pink snow mold
• Spot diseases: Gray leaf spot, Leaf spot, Necrotic ring spot, Spring dead spot
• Other diseases: Anthracnose, Fairy ring, Leaf rust, Melting out, Powdery mildew, Pythium root rot, Red thread, Stem and stripe rust

Pros and Cons

What we liked	What we didn’t like
✓ Long-lasting ✓ Treats many diseases ✓ Best granules for leaf spot and melting-out ✓ Excellent preventative control	✗ Doesn’t always work well on existing infections

2. Lebanon PPZ

Lebanon PPZ provides systemic control for 19 of the most common turf diseases, including gray leaf spot, dollar spot, and summer patch. In addition to treating home lawns, it also works great on golf courses and recreational fields. Its uniform granules are easy to apply evenly, and Lebanon PPZ is our favorite product for treating powdery mildew. 

Specifications

• Active ingredients: Propiconazole
• Coverage: 5,000 – 16,000 sq. ft.
• Effective period: Up to 21 days
• Form: Granules
• Size: 25 lb.
• Type: Systemic

Listed Diseases

The product label recommends Lebanon PPZ for treating the following lawn diseases:

• Patch diseases: Brown patch, Pink patch, Summer patch, Take-all patch, Yellow patch, Zoysia patch
• Snow mold: Gray snow mold, Pink snow mold
• Spot diseases: Dollar spot, Gray leaf spot, Leaf spot, Necrotic ring spot, Spring dead spot
• Other diseases: Anthracnose, Lawn rust, Powdery mildew, Red thread, Stripe smut

Pros and Cons

What we liked	What we didn’t like
✓ Easy to spread ✓ Best for powdery mildew	✗ Doesn’t control blight diseases ✗ Using too much can harm grass

3. Pillar G Intrinsic

Pillar G Intrinsic contains two powerful broad-spectrum fungicides to control 30 common lawn diseases, including patch diseases, snow mold, and dollar spot. In addition to eradicating fungus, Pillar G improves grass’s tolerance to extreme temperatures, drought, and excess moisture. Its granules are smooth and uniform, making the product easy to spread.  

Specifications

• Active ingredients: Pyraclostrobin, Triticonazole
• Coverage: 30,000 sq. ft.
• Effective period: Up to 28 days
• Form: Granules
• Size: 30 lb.
• Type: Systemic and contact

Listed Diseases

Pillar G Intrinsic is recommended for treating the following lawn diseases:

• Blight diseases: Pythium blight, Rabid blight
• Patch diseases: Brown patch, Brown ring patch, Fusarium patch, Large patch, Pink patch, Summer patch, Take-all patch, Zoysia patch
• Snow mold: Gray snow mold, Pink snow mold
• Spot diseases: Bentgrass dead spot, Dollar spot, Gray leaf spot, Leaf spot, Necrotic ring spot, Sheath spot
• Other diseases: Anthracnose, Bermudagrass decline, Downy mildew, Fairy ring, Lawn rust, Melting out, Powdery mildew, Pythium root dysfunction, Red thread, Rhizoctonia leaf, Yellow tuft

Pros and Cons

What we liked	What we didn’t like
✓ Long-lasting ✓ Treats many diseases ✓ Improves weather tolerance ✓ Easy to spread	✗ Is only curative for a few diseases

4. Syngenta Caravan G

If you’re looking for a granular pesticide that eliminates insects and diseases, try Caravan G. It provides systemic protection against over 20 lawn diseases and controls troublesome sucking and chewing insects. Caravan G’s extended-control formula fights fungus for up to 28 days and kills bugs for up to 3 months.

Specifications

• Active ingredients: Azoxystrobin, Thiamethoxam
• Approximate coverage: 10,000 – 15,000 sq. ft.
• Consistency: Granules
• Effective period: Up to 28 days for fungus and up to 90 days for pests
• Size: 30 lb.
• Type: Systemic

Listed Diseases 

The product label recommends Syngenta Caravan G for treating the following lawn diseases:

• Blight diseases: Pythium blight
• Patch diseases: Brown patch, Large patch, Pink patch, Summer patch, Take-all patch, Yellow patch, Zoysia patch
• Spot diseases: Gray leaf spot, Leaf spot, Necrotic ring spot
• Other diseases: Anthracnose, Melting out, Pythium root rot, Red thread

Listed Insects

The product label recommends Syngenta Caravan G for controlling the following pests:

• Ants
• Billbugs
• Chinch bugs
• Crane flies
• Japanese beetles
• Sod webworms
• White grubs

Pros and Cons

What we liked	What we didn’t like
✓ Long-lasting ✓ Controls insects and diseases ✓ Excellent leaf spot and melting out control	✗ Very toxic to aquatic life

Buyer’s Guide to Lawn Fungicide

To purchase the best fungus control product for your turfgrass, please consider the following:

• Fungal diseases
• Types of fungicides
• Active ingredients
• Price

Fungal Diseases

Many common lawn diseases are caused by fungus. Identify your grass’s disease to choose an effective fungicide.

Common turf diseases	Most susceptible grass types
Anthracnose	Annual bluegrass, bentgrass
Brown patch	Bentgrass, perennial ryegrass, tall fescue
Dollar spot	Bentgrass, Bermudagrass, centipede, Kentucky bluegrass, perennial ryegrass, tall fescue, Zoysia
Lawn rust	Bentgrass, Bermudagrass, fine fescue, Kentucky bluegrass, perennial ryegrass, tall fescue, Zoysia
Leaf spot	Annual bluegrass, bentgrass, fine fescue, Kentucky bluegrass, Bermudagrass, perennial ryegrass, tall fescue
Necrotic ring spot	Cool-season grasses, including Kentucky bluegrass and fine fescue
Powdery mildew	Fine fescue, Kentucky bluegrass
Red thread / pink patch	Fescues, perennial ryegrass
Snow mold	Cool-season grasses, including Kentucky bluegrass and perennial ryegrass
Summer patch	Cool-season grasses, including annual bluegrass, fine fescue, and Kentucky bluegrass
Yellow patch	Cool-season grasses, including annual bluegrass and Kentucky bluegrass

Types of Fungicides

There are several ways to categorize lawn fungicides:

• Contact vs. systemic: Contact fungicides stick to grass blades to form a protective barrier that stops the fungus from reproducing. In contrast, systemic fungicides are absorbed into the grass to kill existing fungus and prevent future outbreaks. 
• Preventive vs. curative: Apply preventive fungicides before there are visible signs of a fungal infection and curative fungicides after the fungus flourishes throughout your lawn. Contact fungicides are preventive, and systemic are curative and preventive. 
• Narrow-spectrum vs. broad-spectrum: Narrow-spectrum fungicides only work against a few similar fungal infections, and broad-spectrum fungicides are effective against various unrelated types of fungi. 
• Liquid vs. granular: Liquid fungicide is applied with a sprayer and is often more effective against lawn fungus. Granular fungicide is applied with a lawn spreader and usually takes longer to work than liquids.
• Chemical vs. natural: Chemical fungicides are initially more effective but become less effective over time. Natural fungicides are better for the environment and soil quality. 

Active Ingredients

The table below lists common ingredients used for fungal lawn disease control.

Fungicide	Type
Azoxystrobin	Systemic, broad spectrum
Citric acid	Contact, broad spectrum, natural
Copper octanoate	Contact, natural
Myclobutanil	Systemic, broad spectrum
Neem oil	Systemic, broad spectrum, natural
Propiconazole	Systemic, broad spectrum
Pyraclostrobin	Systemic, broad spectrum
Thiophanate-methyl	Systemic, broad spectrum

Price

The table below shows the typical cost of lawn fungicides.

Type	Average cost	Average cost / 1,000 sq. ft.
Liquid	$45	$5.25
Granular	$70	$7.75
All	$60	$6.50

FAQ About Lawn Fungicides

1. How do you prevent lawn fungus?

In addition to preventive fungicides, good lawn care will prevent fungal infections. You can create a lawn environment where fungi can’t survive by doing the following:

• Watering: Choose the best time to water your grass and consider your grass type’s watering preferences.
• Fertilizing: Conduct a soil test to determine what nutrients your lawn needs. Over-fertilizing turf can make it more susceptible to fungal diseases, but a healthy helping of potassium builds a strong immune system. It’s also best to avoid fertilizing the same day you mow.
• Well-draining soil: Excess moisture is a breeding ground for fungi. Aerating your lawn and removing excess thatch are two ways to improve soil drainage, and clay soils need this care more often than other soil types. 
• Lawn mowing: Mow your lawn correctly and consider using one of the best lawn mowers.
• Cleaning debris: Lawn debris stores excess moisture that attracts fungus, so keep your lawn clean.
• Overseeding: Overseeding with disease-resistant grass varieties can build your lawn’s tolerance to common diseases. 

2. When’s the best time to apply fungicide? 

The best time to apply fungicide is early morning because it’s typically the coolest and most humid time of day.

3. Why does my lawn have brown spots?

The most common explanations for a lawn with brown spots are:

• Poor soil
• Pests
• Fungal infections (brown spot, take-all root rot, dollar spot, gray leaf spot, fairy ring)
• Excess thatch
• Water deficiency 
• Improper fertilization 
• Dormancy

When to Call a Lawn Care Pro

Effective lawn treatments rely on proper diagnosis. Take the guesswork out of lawn care by hiring a pro. LawnStarter connects you with qualified lawn treatment pros who know how to diagnose and treat pests such as fungi, insects, and weeds. A pristine lawn is just a mouse click away, so get your free quote today.

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