Bonide® Copper Fungicide

Bonide® Copper Fungicide is a trusted copper-based fungicide for organic gardening — a modern replacement for the traditional bordeaux mixture that suppresses and controls a broad range of the most common fungal and bacterial diseases affecting fruit trees, berry plants, vines, vegetables, and flowers. The dry powder formula applies as either a dust or a spray, giving home growers flexibility in how they protect their plantings. Use preventatively at the start of disease season or at the first sign of trouble.

A Modern Replacement for Bordeaux — Broad Organic Disease Control

Bordeaux mixture — a traditional blend of copper sulfate and lime — has been used to control plant diseases for over a century. Bonide® Copper Fungicide provides the same copper-based disease suppression in a convenient modern dry powder form that’s easier to store, measure, and apply than traditional bordeaux preparations. The broad disease coverage spans brown rot blossom blight, downy and powdery mildew, peach leaf curl, fire blight, rust, leaf spot, and more — making it one of the most versatile disease management tools in the organic growing toolkit.

Dust or Spray — Two Application Methods in One Product

The dry powder formula is genuinely flexible. Apply it as a dust directly to plant surfaces for quick, targeted coverage — especially useful for peach leaf curl applications in late winter/early spring before bud swell. Or mix with water and apply as a spray for broader, more even coverage across larger plantings and canopies. Both methods are described on the label with full application instructions.

Diseases Controlled

Bonide® Copper Fungicide controls or suppresses brown rot blossom blight, downy mildew, powdery mildew, peach leaf curl, fire blight, rust, leaf spot, and additional diseases listed on the label. Use on fruit trees, berry plants and vines, vegetables, and flowers.

Always read and follow the complete label before use.

Why Growers Choose Bonide® Copper Fungicide

• Modern replacement for bordeaux — trusted copper-based disease control updated for convenience
• Broad disease coverage — brown rot, peach leaf curl, fire blight, rust, leaf spot, and more
• Dust or spray application — two methods in one product for maximum flexibility
• Organic gardening approved — copper-based formula for use in organic programs
• Works on fruit trees, berries, vines, vegetables, and flowers — broad garden coverage
• Preventative and curative — use at season start or at first sign of disease