Bonide Captain Jack’s Liquid Copper Fungicide Ready-to-Use

Bonide Captain Jack’s Liquid Copper Fungicide Ready-to-Use is an organic gardening disease control spray designed to help prevent and control common fungal and bacterial plant diseases on fruits, vegetables, herbs, roses, flowers, nuts, ornamentals, trees, and shrubs. This convenient trigger-spray formula requires no mixing, measuring, or dilution—just shake well and spray affected plants according to label directions.

Powered by Copper Octanoate, also known as copper soap, Captain Jack’s Liquid Copper Fungicide helps control listed diseases such as powdery mildew, downy mildew, black spot, leaf spot, rust, early blight, late blight, peach leaf curl, fruit rot, and more. It can be used during dormant and growing season applications, making it a versatile disease control option for home gardens, fruit trees, vegetable plants, and ornamental landscapes.

Key Benefits

Ready to Use — No Mixing Required
Pre-mixed in a convenient trigger spray bottle for quick disease control on garden plants, flowers, fruit trees, vegetables, herbs, and ornamentals.

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

Copper Soap Formula
Uses Copper Octanoate, a low-concentration copper soap fungicide, to help protect plants from fungal and bacterial disease issues.

Approved for Organic Gardening
Suitable for organic gardening when used according to label directions.

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

Harvest-Day Use When Directed
Can be used on many labeled edible crops up to the day of harvest when applied as directed.

How to Use Bonide Captain Jack’s Liquid Copper Fungicide Ready-to-Use

Shake Well Before Use:
Shake the bottle thoroughly before each application.

Spray Thoroughly:
Apply to all plant surfaces, including the tops and undersides of leaves, stems, and affected plant areas. Complete coverage is important for best disease control.

Apply Preventatively or at First Signs of Disease:
Begin treatment before disease normally appears, when wet weather is expected, or as soon as disease symptoms are noticed.

Repeat as Needed:
Reapply every 7–10 days as needed according to label directions. Reapply after rain when required.

Best Application Timing:
Apply during calm weather and avoid spraying during extreme heat, intense direct sunlight, or when plants are under drought stress.

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