Captain Jack’s Liquid Copper Fungicide
Captain Jack’s Liquid Copper Fungicide by BONIDE is an OMRI-listed, organic-approved fungicide formulated to help prevent and control a broad range of fungal diseases across many types of plants. It’s a great choice for organic growers looking to protect fruits, vegetables, nuts, herbs, and ornamental flowers from issues like blight, leaf spots, downy mildew, and other common plant diseases. This copper-based liquid concentrate can be used during both dormant and active growing periods, offering dependable protection throughout the season. When applied as directed on the label, it is safe to use right up to harvest, making it a practical option for maintaining plant health while staying aligned with organic gardening standards.
Targets:
Captain Jack’s Liquid Copper Fungicide is effective against a broad range of common plant diseases, including:
- Powdery mildew
- Downy mildew
- Blights (including early and late blight)
- Leaf spot diseases
- Rust
- Black rot
- Fruit rot
- Peach leaf curl
- Anthracnose and other fungal leaf diseases
It works as a protective, surface-contact fungicide, helping prevent new infections and stop early disease spread.
Directions for Use:
For best results, apply at the first sign of disease or before conditions favor infection.
- Shake well before use
- Apply as a foliar spray using a hand sprayer, backpack sprayer, or hose-end sprayer (depending on formulation)
- Thoroughly coat all plant surfaces, including tops and undersides of leaves
- Reapply every 7–10 days as needed
- Can be used during dormant season and active growing season
- Apply in cool conditions (avoid extreme heat or direct sun for best plant safety)
- Follow label rates for mixing if using concentrate
Tip: For prevention, consistent coverage is more effective than spot treatment after disease is severe.