Lawn Diseases
Brown Patch Lawn Disease Treatment
Identify brown patch fungus, stop it with the right fungicide, and change the conditions that caused it — a complete recovery plan.
Systemic Fungicide
Scotts DiseaseEx Lawn Fungicide Review
★★★★★ 4.5/5 editor rating
Granular azoxystrobin with up to 4 weeks of systemic protection. The easiest effective fungicide for homeowners — spreader-applied, watered in once.
Affiliate links — see our disclosure. Commissions never influence verdicts.
Our Verdict
The default first response to brown patch, large patch and most common lawn fungi. Broad-spectrum, forgiving to apply, and long-lasting — rotate with propiconazole if disease pressure persists.
✅ Pros
- Systemic protection for up to 28 days
- Broad spectrum: brown patch, large patch, gray leaf spot, snow mold and 20+ more
- Applies with any broadcast spreader — no mixing or spraying
- Rainproof once watered in
⚠️ Cons
- Costlier per treatment than propiconazole concentrates
- Repeated solo use risks fungicide resistance — needs a rotation partner
- Curative rate doubles the cost per 1,000 sq ft
| Product type | Systemic Fungicide |
| Active ingredient | Azoxystrobin 0.31% (granular) |
| Price range | $20–$25 |
| Coverage | 5,000 sq ft per 10 lb bag |
| Best for | First response to active fungal outbreaks |
Where This Product Matters
Matched against each state's actual disease, weed and pest pressure.
Florida
Florida hub →Large patch (Rhizoctonia solani)Gray leaf spotTake-all root rot
Application window: April–May and September–October (check local summer blackout ordinances)
Texas
Texas hub →Brown patch / large patchTake-all root rotGray leaf spot (St. Augustine)Dollar spot
Application window: Late April after full green-up, June, and early September
North Carolina
North Carolina hub →Brown patch (the #1 tall fescue killer)Large patch (warm-season lawns)Dollar spot
Application window: Fescue feeds in fall: September, October and late November — never in summer
Georgia
Georgia hub →Large patch (Zoysia and centipede)Dollar spotTake-all root rot
Application window: Bermuda: monthly light feedings from full green-up (late April) through August
Ohio
Ohio hub →Gray and pink snow mold (after lake-effect winters)
Application window: September and early November (winterizer) carry the lawn; optional light feeding late May
California
California hub →Brown patch (fescue under summer night irrigation)Dollar spot
Application window: Fescue: October–November and March–April; Bermuda: May–August
Pennsylvania
Pennsylvania hub →Gray and pink snow moldDollar spotBrown patch (tall fescue in July)
Application window: September and late October; state law closes the window December 15 – March 1
Illinois
Illinois hub →Snow mold (gray and pink)Dollar spot
Application window: Labor Day and Halloween feedings do 80% of the work; optional light Memorial Day application
Tennessee
Tennessee hub →Brown patch (tall fescue's summer nemesis statewide)Large patch (zoysia)Dollar spotGray leaf spot
Application window: Fescue: September through November; Bermuda and zoysia: May through August
Arizona
Arizona hub →Take-all root rot (Bermuda decline)
Application window: Bermuda: light monthly feedings May–September, plus iron for alkalinity yellowing
Guides That Use This Product
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