Bonide Captain Jack's Copper Fungicide 32 oz Ready-to-Spray — Organic copper disease control, hose-end application

Bonide Captain Jack's Copper Fungicide 32 oz Ready-to-Spray is an organic-approved liquid copper spray formulated to prevent and control common fungal diseases on fruits, vegetables, nuts, herbs and ornamentals.

This ready-to-use hose-end bottle saves time by arriving pre-mixed for direct application across the garden. The copper-based formula creates a protective barrier on plant surfaces, helping manage problems such as powdery mildew, blight, leaf spot, black rot and peach leaf curl. It’s labeled for use up to the day of harvest on listed crops, and is suitable for gardeners who want organic-compliant disease control without mixing concentrates.

How do I apply Captain Jack's Copper Fungicide for best results?

Shake the bottle well, attach it to a garden hose, and spray until foliage is thoroughly covered, including undersides of leaves. Reapply on a 7–10 day schedule or after heavy rain to maintain protection. Always read the full label for specific crop instructions and safety precautions.

• Attach to a standard hose-end sprayer — no measuring or diluting required.
• Coat tops and undersides of leaves, stems and fruit surfaces evenly.
• Repeat every 7–10 days or after significant rainfall for continued coverage.
• Safe for use up to day of harvest on labeled crops when used as directed.

Which plant diseases and crops does this copper fungicide help control?

The product targets a broad range of fungal and bacterial-like diseases that affect garden plants. It is effective against powdery mildew, black rot, leaf spot, downy mildew, blight and peach leaf curl among others. Use it on listed fruits, vegetables, nuts, herbs and flowering ornamentals for preventative or curative action when label directions are followed.

• Controls powdery mildew, leaf spot, blight, black rot and similar diseases.
• Labeled for many fruits, vegetables, nuts, herbs and ornamental plants.
• Can be applied preventatively or at early disease development stages.
• Approved for organic gardening on specified crops when used as directed.

Is Captain Jack's Copper Fungicide safe for organic gardens and harvest timing?

Yes — this ready-to-spray copper formulation is registered for use in organic production on the crops listed on the label. One of its advantages is that it may be used up to the day of harvest for approved plants, offering flexibility for gardeners managing produce. Follow the label to ensure compliance with organic program rules and proper application rates.

• Formulated for use in organic gardening on labeled crops.
• Allowed up to day-of-harvest applications where specified on the product label.
• Read label details to verify specific crop approvals and restrictions.
• Use personal protective equipment as instructed for safe handling.

Will this ready-to-spray option save me time compared to concentrates?

The 32 oz hose-end bottle eliminates mixing and measuring, making treatments quicker and reducing handling of concentrated chemicals. It’s ideal for gardeners who prefer a straightforward, grab-and-go solution for scheduled disease management. Disposal and storage are simpler too, since you’re working with a pre-diluted product formulated for immediate use.

• No dilution or measuring required — attach to hose and spray.
• Pre-mixed convenience reduces application prep time and spills.
• Good choice for small to medium garden plots and beds.
• Follow label storage and disposal instructions to stay compliant.

Who this product is for: Captain Jack's Copper Fungicide is aimed at home gardeners, small-scale fruit and vegetable growers, and organic producers who need an easy-to-use, copper-based disease control option. It’s particularly useful for those combating recurring fungal issues or who want a product approved for organic use and suitable for applications close to harvest. If you need a ready-made spray to treat a wide range of plants without mixing concentrates, this bottle provides a fast, practical approach to disease management.