Bonide Captain Jack's 16 oz Liquid Copper Fungicide Ready-to-Use Spray for Organic Gardening
Bonide Captain Jack's 16 oz Liquid Copper Fungicide Ready-to-Use Spray for Organic Gardening
Hero image 0 of Bonide Captain Jack's 16 oz Liquid Copper Fungicide Ready-to-Use Spray for Organic Gardening, 0 of 8
Popular pick
Visit the BONIDE Store

Bonide Captain Jack's 16 oz Liquid Copper Fungicide Ready-to-Use Spray for Organic Gardening

4.4 stars out of 464 reviews
(4.4)|
464 ratings

Key item features

  • Organic Approved: This fungicide is approved for organic gardening, utilizing Copper Soap (Copper Octanoate) as its active ingredient for plant disease control.
  • Versatile Application: Suitable for both dormant and growing seasons, it can be applied to vegetables, roses, fruits, nuts, herbs, ornamentals, and turf.
  • Broad Disease Control: Effectively controls a wide range of plant diseases including Powdery Mildew, Black Spot, Rust, Downy Mildew, Fruit Rot, Late Blight, and Peach Leaf Curl.
  • Ready-to-Use Convenience: The product comes in a 16 oz ready-to-use spray bottle, providing over 300 spray applications, ideal for smaller gardens.
  • Harvest Safe: Its formulation allows for application up to the day of harvest, ensuring plant health without compromising crop safety.
Generated by AI
Current price is $5.6635.4 ¢/fl oz
Price when purchased online
  • Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $5.66
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $5.66

How do you want your item?

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
How do you want your item?
Columbus, 43215
Arrives by Today
.
Order within 4 hr 11 min
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
walmart plus

Get free delivery, shipping and more*

*Restrictions apply
Try Walmart+ now

Continue your search on Walmart

About this item

Product details

Directions

Warranty

Ingredients

Customer ratings & reviews

4.4 out of 5 stars
stars464 ratings203 reviews
How item rating is calculated
  1. 5 stars69% (321)
  2. 4 stars16% (74)
  3. 3 stars6% (27)
  4. 2 stars2% (8)
  5. 1 star7% (34)

Reviews summary

Pros
  • : Can be used on multiple types of fruits.
  • : Spray nozzle enables precise dispensing.
  • : Suitable for various plant types.
  • : Effective against various types of fungus.
Neutral
  • : Can combat certain fungal infections, but may not fully eliminate them.
Generated by AI

Customer images

  • +47 images
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 203 reviews

Dec 29, 2025
Ches
5 out of 5 stars review

Verified Purchase

Works well for powdery mildew

I used this in combination with a hydrogen peroxide bottom soak for a powdery mildew solution after moving my plants indoors for the winter. It worked for all of my plants, except the flap jack plants. This isn't unexpected as kalanchoe are the top species for susceptibility to powdery mildew. For them I would have had to use something more aggressive. For my staghorn, which has susceptibility, it cleared up completely. I likely got to the kalanchoe too late and should have been using preventative measures prior to moving them indoors. Regardless, I'm pleased with the product and results, recommend it, and will purchase it again.

Helpful?6G0J0CK3YPT2449480508
Dec 5, 2025
Suzanne
5 out of 5 stars review

Verified Purchase

I used it on my toes cause I could get rid of this toenail fungal infection after trying everything and I try this sprayed my toes and bame like like that what I've been trying to get rid of for year gone its like a miracle instantly gone toenail infection. I'm not a doctor so follow instrection if u choose to do what I did at ur own risk. buts the truths

Helpful?6G0J0CK3YPT2449480508
Dec 9, 2025
DeeDee
Top Reviewer
5 out of 5 stars review

Verified Purchase

It worked on the squash plants.

If you have an especially rainy and hot year like we've had here, you're liable to have to deal with fungus on some of your garden. I have to say I was impressed with this product. It killed the fungus that started on my squash leaves rapidly. It can't get any easier to use than this. No mixing required. Just open the spray nozzle, aim, and pump!

Helpful?6G0J0CK3YPT2449480508