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Item 1 of 8
popularjk6812 | Staff posted Jul 17, 2026 9:20 AM
32-Ounce Bonide Captain Jack's Copper Fungicide Spray $7.79 + Free Shipping w/ Prime or on $35+
$7.79
$12
35% off
Amazon
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Amazon [amazon.com] has 32-Oz Bonide Captain Jack's Copper Fungicide Ready-to-Use Spray on sale for $7.79. Shipping is free w/ Prime or on orders $35+.
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Amazon [amazon.com] has 32-Oz Bonide Captain Jack's Copper Fungicide Ready-to-Use Spray on sale for $7.79. Shipping is free w/ Prime or on orders $35+.
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1 Comment
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I strongly recommend getting the concentrated version instead. It runs about $20 for a 16 oz bottle and contains 10% of the active ingredient (Copper Octanoate / Copper Soap) compared to just 0.08% in the pre-mixed bottle. I believe it has a long shelf life, so you don't need to worry about it going bad quickly.
A single bottle makes roughly 15.6 gallons of spray, and you can easily adjust the dosage depending on the plant according to directions. That works out to about $0.32 per 32 oz spray—a huge cost savings.
Here is the link to the concentrated version:
https://www.amazon.com/Bonide-811...B00BSULSH
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