⚖️ Educational use only. Always read and follow the full product label — the label is the law under FIFRA. Full disclaimer → | ⚗️ Mixing Calculator →
🏷️ Brand Names — Same Active Ingredient
Kocide 3000 — OAR — professional copper hydroxide
Cueva — Certis — OMRI-listed copper octanoate
Bonide Copper Fungicide — consumer copper octanoate RTU
Champ WG — Nufarm — copper hydroxide WDG
🎯 What It Kills
✓ Fire Blight✓ Powdery Mildew✓ Downy Mildew✓ Early Blight✓ Late Blight✓ Anthracnose✓ Black Spot✓ Brown Rot
⚙️ How It Works
Copper releases ions that disrupt fungal and bacterial enzymes. Broad-spectrum bactericide and fungicide. OMRI-listed copper products approved for certified organic production. Preventive — stops new infections but does not cure existing disease.
⚗️ Mixing & Application
Cueva: 0.5–2 fl oz per gallon for home garden. Apply preventively before disease pressure. Multiple copper forms have different solubility — copper octanoate generally safer on plants.
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.
⚠️ Safety
- ⚠ Toxic to fish and aquatic invertebrates
- ⚠ Phytotoxicity possible above 85°F or under drought stress
- ⚠ Copper accumulates in soil with repeated use — limit applications
- ⚠ Do not mix with emulsifiable concentrate formulations
🐛 Pests This Treats — Learn More
Click any pest to view its full identification guide, biology, and treatment options.
⏱️ Residual & Re-entry Timeline
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Apply
Follow label mixing and application rates
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Re-entry: 2–4 hours (until dry)
Keep people and pets out of treated area
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Effective period: 7–14 days
Active residual — killing or repelling target pests
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Reapply
Re-treat when pest activity returns or residual expires
🌿 Environmental & Ecological Impact
❓ Frequently Asked Questions
Q: Is copper fungicide 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 copper fungicide 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 copper fungicide 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)
Kocide 3000 — Safety Data Sheet
View the official SDS document for this product directly on the CDMS label database.
📚 Sources: EPA Pesticide Labels · NPIC Pesticide Info
Published: Jan 1, 2025 · Updated: Apr 7, 2026
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Reviewed by Derek GiordanoContent reviewed by a licensed pest management professional and cross-referenced against EPA, university extension, and manufacturer technical data. Last reviewed: April 2026.