The best fungicide for dollar spot is one that matches the disease pressure, the grass species, and the application timing that keeps this common turf disease from spreading. Dollar spot appears as small straw-colored spots that merge into larger patches, and it thrives when nitrogen is low, dew lingers, and nights are cool.
Choosing an effective treatment depends on the grass type, the severity of the outbreak, and how the lawn is managed. Bentgrass, bermudagrass, and zoysia respond differently to the same active ingredient, and contact fungicides need more frequent application than systemic options. Cultural factors like mowing height, irrigation timing, and nitrogen level change how quickly dollar spot returns.
Application timing and coverage decide whether a treatment works. Rotating modes of action, spraying before symptoms spread, watering in systemic products correctly, and correcting low nitrogen all reduce disease pressure, while spraying the same active ingredient repeatedly and ignoring dew duration breeds resistance and rebound infections. Get those wrong and the result is a lawn that scars over the same patches every season.
In this guide, we review 15 of the best fungicide for dollar spot options by examining active ingredients, application method, and what each one needs to perform.
Best Fungicide For Dollar Spot: 15 Best Options
1. Propiconazole Concentrate – Best Overall Fungicide For Dollar Spot
Propiconazole concentrate is the best overall fungicide for dollar spot because it is a systemic demethylation inhibitor that moves into grass blades and controls the disease from inside the plant. It works on established outbreaks and has a longer residual than contact options.
- Propiconazole 14.3%
- Propiconazole 14.3% can be used in plantations, turf grasses, ornamental beds, conifer farms, nurseries, soil applications, through irrigation systems and in other listed areas.
Mix per label directions and spray when dollar spot symptoms first appear, covering the lawn evenly and watering in lightly if the label permits. Rotate with a different mode of action after two applications to slow resistance.
Propiconazole concentrate from a reputable supplier is backed by quality guarantees and works well for homeowners who want reliable dollar spot control.
- Systemic activity
- Longer residual
- Controls established dollar spot
- Works on many turf species
- Available as concentrate
- Good rotation partner
- Widely used
- Resistance risk with overuse
- Needs accurate mixing
- May suppress beneficial fungi
2. Azoxystrobin Granular – Best Long-Residual Fungicide For Dollar Spot
Azoxystrobin granular is the best long-residual fungicide for dollar spot because it belongs to the strobilurin group and protects turf for weeks after application. It suits lawns where dollar spot returns every season.
Spread granules evenly with a calibrated spreader and water in thoroughly to activate the active ingredient. Apply before symptoms spread widely, and rotate with a different group next season.
Azoxystrobin granular fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners who want extended dollar spot protection.
- Long residual
- Granular application is easy
- Protects new growth
- Works on many turf species
- Good for seasonal programs
- Reduces spray frequency
- Effective when timed early
- Resistance risk if repeated
- Needs watering in
- Higher cost
3. Chlorothalonil Contact Fungicide – Best Protectant For Dollar Spot
Chlorothalonil contact fungicide is the best protectant for dollar spot because it forms a protective barrier on leaf surfaces before infection starts. It suits preventive programs where disease appears predictably each spring and fall.
- ACTIVE INGREDIENT 54% – Chlorothalonil
- Multiple-site protection that offers excellent disease protection with low resistance risk.
Apply at the label rate before dollar spot appears, covering the lawn thoroughly, and reapply per the label interval. Reapply after heavy rain if the label requires it.
Chlorothalonil fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners running a preventive dollar spot program.
- Effective protectant
- Broad-spectrum control
- Works on many turf species
- Widely available
- Good for prevention
- Reliable in rotation
- Fast acting on contact
- No systemic activity
- Requires frequent reapplication
- Not for curative use
4. Tebuconazole Concentrate – Best Curative Fungicide For Active Dollar Spot
Tebuconazole concentrate is the best curative fungicide for active dollar spot because it moves systemically into the plant and stops the disease from spreading through infected blades. It suits lawns already showing patches.
- 38.7% Tebuconazole preventive and curative properties that provides control for up to 3 weeks
- For Use On: Residential & Commercial Landscape Ornamentals, Golf Course Turf, Nursery Ornamentals
Spray at the label rate once dollar spot is confirmed, and cover the leaf canopy evenly. Repeat per the label interval and rotate with another mode of action afterward.
Tebuconazole concentrate from a reputable supplier is backed by quality guarantees and works well for homeowners fighting active dollar spot outbreaks.
- Curative activity
- Systemic movement
- Stops spread in blades
- Works on active outbreaks
- Good rotation partner
- Available in concentrates
- Long residual
- Resistance risk
- Needs careful mixing
- Can suppress growth if overused
5. Myclobutanil Spray – Best DMI Fungicide For Dollar Spot Prevention
Myclobutanil spray is the best DMI fungicide for dollar spot prevention because it moves into turf tissue and protects new growth as it emerges. It suits lawns that need protection ahead of the fall disease window.
- FUNGUS CONTROL WITH LASTING FIGHTING POWER: Gravex 20 EW Fungicide contains 19.7% myclobutanil; the same active ingredient as Eagle 20EW specialty fungicide, a trustworthy partner for broad-spectrum fungus takedown.
- CURE + PREVENT: Gravex 20 EW works double duty to deliver proven fungus control. With both curative and preventive properties, Gravex strikes out invading fungus and halts future development.
Spray at the label rate just before dollar spot season begins, and repeat per the label interval while conditions favor disease. Rotate with a different mode of action to slow resistance.
Myclobutanil fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners preventing seasonal dollar spot.
- Systemic prevention
- Protects new growth
- Long residual
- Works on many turf species
- Good before fall disease window
- Reliable in rotation
- Widely available
- Resistance risk with DMIs
- Needs accurate dosing
- Not for curative use alone
6. Thiophanate-Methyl Spray – Best Systemic Fungicide For Home Lawns
Thiophanate-methyl spray is the best systemic fungicide for home lawns because it moves through the plant and controls dollar spot with a relatively short interval between applications. It suits homeowners who want a proven systemic option.
- PLEASE NOTE: This product is not available for sale or shipment in Connecticut (CT)
- Broad-Spectrum Control: Provides control of many plant diseases including anthracnose, cankers, and dollar spot (full list available on product label)
Spray at the label rate when dollar spot first appears, and repeat per the label interval while conditions stay favorable for disease. Rotate with a different mode of action afterward.
Thiophanate-methyl fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners managing recurring dollar spot.
- Systemic activity
- Controls dollar spot
- Works on home lawns
- Widely available
- Easy to spray
- Good in rotation
- Reliable results
- Resistance risk
- Short residual
- Requires repeat application
7. Mancozeb Contact Fungicide – Best Protectant For Dollar Spot Patches
Mancozeb contact fungicide is the best protectant for dollar spot patches because it coats leaf surfaces and prevents spore germination before infection begins. It suits lawns where dollar spot appears predictably after cool nights.
Spray at the label rate before symptoms appear, and reapply per the label interval or after rain. Cover the canopy evenly, since contact fungicides only protect what they touch.
Mancozeb fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners building a preventive dollar spot program.
- Broad-spectrum protectant
- Prevents spore germination
- Works on many turf species
- Widely available
- Good in preventive rotation
- Reliable barrier
- Effective before symptoms
- No systemic activity
- Washes off in rain
- Needs frequent reapplication
8. Flutolanil Granular – Best Granular Fungicide For Dollar Spot In Bermudagrass
Flutolanil granular is the best granular fungicide for dollar spot in bermudagrass because it specifically targets the disease in warm-season turf and is easy to spread evenly. It suits homeowners who prefer granular over spray.
- Dual Active Ingredients: Combines pyraclostrobin (0.38%) and triticonazole (0.43%) for broad spectrum disease control; Systemic and contact activity against turf diseases
- Granular Application: Easy-to-apply granular formulation provides uniform coverage and extended disease protection; Effective formulation for commercial applications
Spread with a calibrated spreader at the label rate and water in thoroughly so the active ingredient reaches the root zone. Apply before symptoms spread, and repeat per the label interval if needed.
Flutolanil granular fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners with bermudagrass lawns.
- Effective on bermudagrass
- Granular application
- Easy to spread
- Reduces spray drift
- Works in warm-season lawns
- Targets dollar spot
- Good for homeowners
- Needs watering in
- Higher cost
- Limited to certain turf types
9. Pyraclostrobin Spray – Best Fast-Acting Strobilurin For Dollar Spot
Pyraclostrobin spray is the best fast-acting strobilurin for dollar spot because it acts quickly on active infections and has strong preventive activity. It suits lawns where dollar spot spreads fast after cool, wet nights.
- Dual Active Ingredients: Combines pyraclostrobin (0.38%) and triticonazole (0.43%) for broad spectrum disease control; Systemic and contact activity against turf diseases
- Granular Application: Easy-to-apply granular formulation provides uniform coverage and extended disease protection; Effective formulation for commercial applications
Spray at the label rate when dollar spot appears or just before the disease window, and rotate with a different mode of action after one or two applications. Follow the label interval for reapplication.
Pyraclostrobin fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners who need rapid dollar spot control.
- Fast-acting
- Strong preventive activity
- Works on active infections
- Good for rapid spread
- Reliable in rotation
- Effective on many turf species
- Widely used
- Resistance risk
- Higher cost
- Needs accurate dosing
10. Polyoxin D Zinc Salt – Best Biofungicide For Dollar Spot
Polyoxin D zinc salt is the best biofungicide for dollar spot because it controls the disease with a low-toxicity active ingredient that fits organic-leaning programs. It suits lawns where synthetic fungicide use is limited.
No products found.
Spray at the label rate when dollar spot appears, and repeat per the label interval while conditions favor disease. Apply in the evening or early morning to reduce UV breakdown.
Polyoxin D zinc salt fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners wanting a reduced-risk dollar spot option.
- Low toxicity
- Reduced-risk profile
- Good rotation partner
- Works on dollar spot
- Fits organic-leaning programs
- No resistance buildup with other groups
- Effective when timed correctly
- Shorter residual
- Needs repeat application
- Higher cost
11. Bacillus Subtilis Biofungicide – Best Organic Preventative For Dollar Spot
Bacillus subtilis biofungicide is the best organic preventative for dollar spot because it colonizes leaf surfaces and competes with the disease organism. It suits lawns managed without synthetic fungicides.
- HIGH-POTENCY BACILLUS SUBTILIS: Contains Bacillus subtilis at 100 Billion CFU/g, providing a concentrated microbial inoculant powder designed for soil and garden applications
- MICROBIAL INOCULANT POWDER: A fine, easy-to-handle powder formulated for gardeners and growers who use microbial inoculants as part of regular soil and plant care routine
Spray at the label rate before dollar spot appears, and repeat per the label interval while conditions favor disease. Apply in the evening or early morning to protect the live organisms from UV.
Bacillus subtilis biofungicide from a reputable supplier is backed by quality guarantees and works well for homeowners running an organic dollar spot program.
- Organic approved
- Low toxicity
- Competes with disease organism
- Fits organic programs
- Safe around pets
- Good preventive tool
- No resistance issues
- Preventive only
- Shorter residual
- Needs frequent reapplication
12. Copper Hydroxide Fungicide – Best Inorganic Protectant For Dollar Spot
Copper hydroxide fungicide is the best inorganic protectant for dollar spot because it forms a barrier on leaf surfaces that blocks spore germination. It suits lawns where a broad-spectrum protectant is needed.
- Control fungus and disease in your garden with Captain Jack’s ready-to-use Liquid Copper Fungicide!
- Approved for organic gardening, this fungicide is suitable for the production of organic produce and can even be used up until the day of harvest!
Spray at the label rate before symptoms appear, and reapply per the label interval or after rain. Cover the canopy thoroughly, since contact protectants only work where they land.
Copper hydroxide fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners building a preventive dollar spot program.
- Broad-spectrum protectant
- Blocks spore germination
- Works on many turf species
- Widely available
- Good in rotation
- Reliable barrier
- Effective when timed before disease
- Washes off in rain
- Can stain surfaces
- Needs frequent reapplication
13. Iprodione Spray – Best Contact Fungicide For Dollar Spot Patches
Iprodione spray is the best contact fungicide for dollar spot patches because it stops spore germination and mycelial growth on treated leaves. It suits lawns where dollar spot appears in predictable patches each season.
- TURF & ORNAMENTAL: Labeled for turf and ornamental applications
- USE SITES: Non-Residential Turf, Golf Courses, Sod Farms, & Non-Residential Ornamentals
Spray at the label rate when dollar spot first appears, and reapply per the label interval while conditions favor disease. Cover the patch area and surrounding turf evenly.
Iprodione fungicide from a reputable supplier is backed by quality guarantees and works well for homeowners treating patchy dollar spot outbreaks.
- Stops spore germination
- Works on active patches
- Effective on many turf species
- Widely available
- Useful in rotation
- Contact action
- Reliable results
- No systemic activity
- Resistance risk
- Needs repeat applications
14. Nitrogen-Rich Fertilizer For Dollar Spot Recovery – Best Cultural Support
Nitrogen-rich fertilizer for dollar spot recovery is the best cultural support because low nitrogen is one of the strongest drivers of the disease. Correcting fertility reduces dollar spot pressure and helps turf recover faster.
- This spring lawn fertilizer is one application and done for a season
- Contains natural beneficial microorganisms for lawn care that revitalize soil
Apply a moderate nitrogen feed at the label rate when dollar spot appears, and water it in thoroughly. Avoid heavy nitrogen in hot weather, which pushes soft growth that invites other diseases.
Nitrogen-rich lawn fertilizer from a reputable supplier is backed by quality guarantees and works well for homeowners correcting the underlying cause of dollar spot.
- Addresses a root cause
- Speeds turf recovery
- Reduces dollar spot pressure
- Works with fungicides
- Easy to apply
- Improves color
- Widely available
- Not a fungicide
- Can push soft growth if overdone
- Needs correct timing
15. Combination Fungicide With Two Modes Of Action – Best Resistance-Management Option
Combination fungicide with two modes of action is the best resistance-management option because it pairs actives that attack dollar spot differently, reducing the chance of resistant strains. It suits lawns with repeated outbreaks.
- Two treatments in one application, Labeled for a Broad spectrum of INSECTS and DISEASES
- This simple to apply unique micro-injection tree care treatment is an exclusive formulation that has been developed and offered only by Mauget to control both diseases and insects with one simple, easy to apply microinjection application saving both time and expence.
Apply at the label rate when dollar spot appears, and follow the label interval for reapplication. Check which actives the blend contains so it fits your rotation plan.
Combination fungicides from a reputable supplier are backed by quality guarantees and work well for homeowners managing recurring dollar spot with resistance in mind.
- Two modes of action
- Reduces resistance risk
- Broad activity
- Good for repeated outbreaks
- Simplifies rotation
- Effective on many turf species
- Widely available
- Higher cost
- Limited rotation flexibility
- Not a substitute for cultural fixes
Tips For Controlling Dollar Spot
- Confirm the diagnosis: Dollar spot resembles other turf diseases. Look for small straw-colored spots with hourglass lesions before treating.
- Check your nitrogen: Low nitrogen is a major driver of dollar spot. A moderate feed often reduces pressure more than an extra spray.
- Rotate modes of action: Dollar spot develops resistance quickly. Alternate chemical groups rather than repeating one active ingredient.
- Water early in the day: Evening irrigation extends leaf wetness and encourages dollar spot. Water in the morning so dew dries.
- Spray before symptoms spread: Preventive applications work better than curative sprays once patches merge.
- Mow at the right height: Scalped turf is more vulnerable. Keep mowing height consistent and sharpen blades.
- Reduce dew duration: Improving airflow and removing morning dew shortens the wet period the disease needs.
Best Fungicide For Dollar Spot Frequently Asked Questions
1. What is the best fungicide for dollar spot?
Propiconazole concentrate is the best overall choice because it is systemic, has a longer residual, and controls established dollar spot. Azoxystrobin and chlorothalonil follow closely for long-residual and preventive use.
2. How often should I apply fungicide for dollar spot?
Follow the label interval, which is typically every seven to fourteen days for contact fungicides and every fourteen to twenty-eight days for systemic options. Rotate modes of action.
3. Why does dollar spot keep coming back?
Recurring dollar spot usually signals low nitrogen, extended leaf wetness, scalping, or resistance from repeated use of one fungicide group. Correcting cultural factors prevents recurrence.
4. Can I control dollar spot without fungicide?
Yes, if the outbreak is mild. Improving nitrogen, mowing height, airflow, and irrigation timing reduces dollar spot pressure, but severe outbreaks usually need a fungicide.
5. Does nitrogen help dollar spot?
Yes. Low nitrogen is a major driver of dollar spot, so a moderate feed speeds recovery and reduces disease pressure. Avoid heavy nitrogen in hot weather.
6. What is the best fungicide for dollar spot on bermudagrass?
Flutolanil granular is the best option for bermudagrass because it targets dollar spot in warm-season turf and is easy to spread. Azoxystrobin and propiconazole also work well.
7. Are organic fungicides effective on dollar spot?
Biofungicides like Bacillus subtilis and polyoxin D zinc salt work best as preventives, not cures. Severe outbreaks usually need synthetic fungicides alongside cultural corrections.
Conclusion
Propiconazole concentrate is the best overall fungicide for dollar spot because it is systemic, has a longer residual, and controls established outbreaks. Azoxystrobin and chlorothalonil follow closely for long-residual and preventive programs.
Tebuconazole, myclobutanil, thiophanate-methyl, mancozeb, flutolanil, pyraclostrobin, polyoxin D zinc salt, Bacillus subtilis, copper hydroxide, iprodione, nitrogen fertilizer, and combination fungicides each solve a specific dollar spot situation.
Effective control depends on confirming the disease, correcting nitrogen and irrigation habits, rotating modes of action, and spraying before patches merge. No single fungicide solves dollar spot alone.
Start with a cultural fix, apply a labeled fungicide at the right timing, and rotate actives between seasons. Thoughtful management keeps dollar spot patches from returning year after year.