Bonide Captain Jack’s Liquid Copper Fungicide Concentrate

Bonide Captain Jack’s Liquid Copper Fungicide Concentrate is an organic gardening disease control solution designed to help prevent and control common fungal and bacterial plant diseases on vegetables, fruits, herbs, roses, flowers, nuts, and ornamental plants. Powered by Copper Octanoate, also known as copper soap, this concentrated formula must be mixed with water and applied with a garden sprayer.

This copper fungicide is ideal for treating listed diseases such as powdery mildew, downy mildew, black spot, leaf spot, blight, rust, peach leaf curl, and other common garden disease issues. Use it as part of a regular plant care routine to help protect edible and ornamental plants from disease pressure throughout the growing season.

Key Benefits

Concentrated Copper Fungicide
Mix with water before use to create a spray solution for treating listed fungal and bacterial plant diseases.

Active Ingredient: Copper Octanoate
Uses copper soap to deliver disease control for home gardens, fruit trees, vegetables, herbs, roses, and ornamentals.

Controls Common Garden Diseases
Helps prevent and control powdery mildew, downy mildew, black spot, leaf spot, blight, rust, peach leaf curl, and other listed diseases.

Approved for Organic Gardening
A dependable disease control option for organic gardens when used according to label directions.

Use on Edibles & Ornamentals
Labeled for use on fruits, vegetables, herbs, nuts, roses, flowers, shrubs, trees, and ornamental plants.

Harvest-Day Use When Directed
Can be used on many labeled fruits and vegetables up to the day of harvest when applied according to the product label.

How to Use Bonide Captain Jack’s Copper Fungicide Concentrate

Mix Before Use:
This is a concentrate and must be diluted with water before application. Shake well and mix according to the product label for your specific plant and disease issue.

Apply with a Sprayer:
Use a clean garden sprayer to apply an even coating to plant surfaces.

Cover Foliage Thoroughly:
Spray the tops and undersides of leaves, stems, and affected plant areas until evenly wet. Complete coverage is important for best disease control.

Apply Preventatively or at First Signs of Disease:
For best results, begin applications before disease becomes severe or as soon as symptoms appear.

Repeat as Directed:
Reapply according to label intervals based on plant type, disease pressure, and weather conditions.

Best Application Timing:
Apply in calm weather and avoid spraying during extreme heat, intense direct sunlight, or plant stress.

Always read and follow the product label before use, including mixing rates, approved plants, listed diseases, harvest timing, and application precautions.