Propiconazole is one of the most widely used lawn and landscape fungicides. It controls a broad spectrum of turf diseases including brown patch, dollar spot, and anthracnose. Works by inhibiting ergosterol synthesis — a critical component of fungal cell membranes. Both preventive and curative.
Brown patch, dollar spot, anthracnose, red thread, rust, powdery mildew, leaf spot, summer patch, snow mold, Fusarium, Sclerotinia. Also labeled for some tree and ornamental diseases. Very broad-spectrum triazole fungicide.
🏷️ Products & Brand Names
Banner MAXX (professional), Honor Guard PPZ, Infuse Systemic Granules (BioAdvanced — consumer), Ferti-lome Liquid Systemic Fungicide, Bonide Infuse, Quali-Pro Propiconazole. Available as liquid concentrate and granular formulations.
⚠️ Safety & Precautions
Low mammalian toxicity (EPA Category III). Wear gloves and avoid skin contact during mixing. Keep children and pets off treated turf until dry (typically 2-4 hours). Do not apply near water bodies — toxic to aquatic organisms.
⚠️ Resistance management: Triazole fungicides are prone to resistance development when used exclusively. Rotate with fungicides from different FRAC groups (e.g., strobilurins, chlorothalonil) to prevent resistant fungal strains.
Example
0.5 oz
per gallon
⚗️ Mixing Calculator
Enter your sprayer size and target rate — get the exact amount to pour. Backpack, hand sprayer, hose-end, or skid unit.
Preventive vs curative: Propiconazole works both ways, but it's significantly more effective when applied preventively before disease appears. For brown patch in warm-season turf, begin applications when nighttime temperatures consistently exceed 65°F.
Application rate: Typical homeowner rate is 1-2 fl oz per 1,000 sq ft. Water in lightly after application for soil-borne diseases (summer patch). For foliar diseases (brown patch), apply and do NOT water in — the fungicide needs leaf contact.
Systemic advantage: Propiconazole is absorbed by the plant and moves upward (acropetally). This means it protects new growth that emerges after application — something contact fungicides can't do.
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💡 Triazole fungicide. Low to moderate environmental toxicity. Persistent in soil.
❓ Frequently Asked Questions
Q: Is propiconazole safe for pets?
Follow the product label. Keep pets out of treated areas until completely dried (2–4 hours for sprays). Once dry, treated surfaces pose minimal risk to dogs and cats.
Q: Can I use propiconazole indoors?
Check the specific product label — formulations vary. Baits and dusts often have indoor labeling; concentrates and granulars are typically outdoor.
Q: How long does propiconazole last after application?
Residual varies by formulation, surface type, weather, and UV exposure. Indoor applications last longer than outdoor. Check the product label for re-application intervals.
Q: What should I do if exposed?
Remove contaminated clothing, wash skin with soap and water. For eye contact, rinse 15–20 minutes. For ingestion or severe symptoms, call Poison Control (1-800-222-1222). Have the product label available.
📋 Safety Data Sheet (SDS)
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Propiconazole Fungicide — Safety Data Sheet
View the official SDS document for this product directly on the CDMS label database.
💡 Did you know? Propiconazole was first registered in 1981 and remains one of the most important fungicides in turf management 40+ years later. It belongs to the same chemical family (triazoles) as some human antifungal medications like fluconazole.
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Reviewed by Derek GiordanoContent reviewed by a licensed pest management professional. Last reviewed: April 2026.
