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Bonide - Trusted Since 1926Bonide

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Bonide Captain Jack Copper Fungicide 16 oz Concentrated Plant Disease Control Solution for Organic Gardening

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4.5 8,677 ratings

Amazon's Choice in Garden Fertilizers by Bonide

$17.98 with 5 percent savings

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Purchase options and add-ons

Item Form	Liquid
Item Weight	1.27 Pounds
Liquid Volume	16 Fluid Ounces
Brand	Bonide

About this item

Control fungus and disease in your garden with Captain Jack’s Liquid Copper Fungicide Concentrate!
Approved for organic gardening, this fungicide is suitable for the production of organic produce and can even be used up until the day of harvest!
Copper Fungicide effective in the control and prevention of a wide range of plant diseases. Listed common garden diseases include blight, black spot, powdery mildew peach leaf curl and more.
Apply copper fungicide to fruits, vegetables, ornamentals and other plants in your lawn and garden for complete and long-lasting disease control.
This product arrives conveniently ready-to-mix! To use, mix with water according to package directions and thoroughly apply to affected plants. Please see product label for full use instructions.

Customer ratings by feature

Accuracy

4.5

Easy to use

4.5

Value for money

4.3

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From the manufacturer

Captain Jack with tagline Protect Your Oasis and Bottle of Concentrated Copper Fungicide

Image shows copper fungicide can be applied during growing and dormant seasons to buds and flowers

For organic gardening, can be used indoors and outdoors on various plants

Nature Inspired Solutions from Captain Jack control plant diseases


	Copper Fungicide Concentrate	Ready-to-Spray Copper Fungicide	Ready-to-Use Copper Fungicide

Customer Reviews	8,677	834	5,342
Price	$17.98	$28.99	$10.98
For Organic Gardening	✓	✓	✓
Application Method	Mix with water and apply using a sprayer bottle or pressure tank sprayer	Attach to garden hose and spray directly on affected plants	Use trigger sprayer bottle to spray directly on affected plants
Can be applied up to day of harvest	✓	✓	✓

Product information

Product Dimensions

2.13 x 4 x 6.75 inches

Item Weight

1.27 pounds

Department

Unisex-Adult

Manufacturer

Bonide Products LLC

ASIN

B00BSULSHA

Country of Origin

USA

Item model number

811

Customer Reviews

4.5 8,677 ratings

4.5 out of 5 stars

Best Sellers Rank

#297 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#15 in Garden Fertilizers

Is Discontinued By Manufacturer

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product guides and documents

Instructions for Use (IFU) (PDF)

Product Description

Liquid Copper Fungicide Concentrate

Controls powdery mildew, downy mildew, black spot, peach leaf curl, rust, and other listed diseases. Perfect for use on vegetables, roses, fruits, nuts, herbs, ornamentals, and turf. Incredibly easy to apply and can be used up to the day of harvest.

About Bonide:Bonide has been trusted since 1926 as the leader in providing the best possible products and solutions for home, lawn, and garden pest problems. Based out of Oriskany, New York, we continue to grow our reputation as a leader in the lawn and garden care categories by delivering the highest quality products alongside our great customer service. Our goal is to help consumers throughout their entire purchasing process by recognizing signs of trouble, developing the best solutions, and recommending the perfect products.

Top Brand: Bonide

Highly Rated

100K+ customers rate items from this brand highly

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100K+ orders for this brand in past 3 months

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	This Item Bonide Captain Jack Copper Fungicide 16 oz Concentrated Plant Disease Control Solution for Organic Gardening	Recommendations Bonide 811 Copper 4E Fungicide 16oz (473ML) (2 Pack)	dummy Bonide BONIDE PRODUCTS 775 Ready-to-Use Copper Fungicide, 32-Ounce [2-Pack]	dummy Spectracide Immunox Multi-Purpose Fungicide Spray Concentrate For Gardens 16 Ounces, Protects Up To 2 Weeks	dummy Bonide (BND141) - Sulfur Plant Fungicide, Organically Controls Rust, Leaf Spot and Powdery Mildew (1 lb.)	dummy Bonide Captain Jack's Deadbug Brew, 16 oz Concentrate Outdoor Insecticide and Mite Killer for Organic Gardening
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	-5% $17.98 List: $18.99	$39.09	$27.49	-25% $12.98 List: $17.30	$9.99	-28% $14.68 List: $20.49
Delivery	Get it as soon as Monday, May 13	Get it as soon as Monday, May 13	Get it as soon as Monday, May 13	Get it as soon as Monday, May 13	Get it as soon as Tuesday, May 14	Get it as soon as Monday, May 13
Customer Ratings	4.58,677	4.7174	4.5840	4.52,060	4.41,465	4.64,772
Easy to use	4.5	4.7	4.8	4.7	4.0	4.6
Value for money	4.3	4.4	4.3	4.5	3.6	4.3
Sold By	Amazon.com	Endlessmart	Monster Pets	Amazon.com	Amazon.com	Amazon.com
number of pieces	1	—	—	—	1	1
liquid volume	16 fluid ounces	473 milliliters	2000 milliliters	16 fluid ounces	1000 milliliters	16 fluid ounces
form	Liquid	Liquid	Spray	Spray	Spray	Spray
weight	1.27 pounds	16 ounces	2.37 pounds	1.2 pounds	1 pounds	1.24 pounds

Customer reviews

4.5 out of 5

8,677 global ratings

How customer reviews and ratings work

Customers say

Customers like the value, performance, and color of the pesticide. For example, they mention it's the best value for the money, works well for flowers, mangoes, and peach trees, and is efficient in controlling spring fungus. That said, they appreciate the organic, quality, and ease of use. Opinions are mixed on disease resistance and toxicity.

AI-generated from the text of customer reviews

366 customers mention307 positive59 negative

Customers like the performance of the pesticide. They say it works well for flowers, mangoes, and peach trees. They also say it's easy to use and efficient in controlling spring fungus. Customers also say that it'll bring healthy new growth to their plants.

"...Now this year April, ( live in NC) Both shrubs are completely fungus free and look beautiful. This did now harm my Shrubs." Read more

"...After some research I tried this and thank goodness I did, it helped stop and blight and while some of my plants struggled a bit still, the others..." Read more

"...of my problem, it allowed me to manage the issue and still maintain a somewhat healthy, fruitful, garden this year...." Read more

"Works well on my peach trees" Read more

45 customers mention36 positive9 negative

Customers like the value of the product. They say it's the best value for the money, saves money over pre-mixed stuff, and is more affordable than pre-made. They also say it helps keep their rose bushes looking nice and is a cost effective solution to fungal infections.

"Concentrate works just as well as the pre mixed. Better value mixing it up as needed. Really helps to keep my rose bushes looking nice." Read more

"...Then we found this which has to be mixed, but is much more cost effective...." Read more

"This is the best way to buy this product as it a value per oz is unmatched. Works great for fungus on my perennials." Read more

"I was happy with this product. It performed as advertised. A bit pricy." Read more

41 customers mention41 positive0 negative

Customers find the pesticide easy to use and mix. They say it's straightforward to use, and it'll mix with water easily. Customers also mention that it'd be easy to apply to fruit trees.

"...Was easy to mix and apply with a sprayer...." Read more

"...earlier today, now I wait and hope that it kills the fungus Wasn’t hard to mix or use. Fast shipping" Read more

"...Very easy to apply! No mess, I just mixed in my sprinkling can and applied.." Read more

"Easy to use. WORKS quickly 1" Read more

18 customers mention13 positive5 negative

Customers like the color of the product. They say that it makes their plants deep dark green with no signs of blight. They also say that the leaves are bright green again in just a few weeks. Customers also mention that it fights black spot on tomatoes and powdery mildew on cucumbers.

"...this fungicide and sprayed to my trees, within days, there are no more brown leaves. Very effective, highly recommend." Read more

"...The brown spots are still there on some leaves, but the leaves are green - so that seems like a good sign...." Read more

"...a fungus problem after repeated applications but it colors the leaves and everything blue." Read more

"...As it is, the spots are growing very, very slowly, a d new leaves are black-free." Read more

15 customers mention15 positive0 negative

Customers find the pesticide organic, great for organic gardening, and the best eco solution. They also mention it's made of natural oil extracts and hormones and is a non-toxic organic solution.

"I really like this happy jack fungicide spray because it's organic. It works really well on my tomatoes make like grapes and also my flowers...." Read more

"...Like that it’s safe, made of natural oil extracts & hormones, and can be applied directly to fruits and vegetables...." Read more

"I really liked that this product is organic...." Read more

"...Both these products are organic which is better than chemicals. BTW, Bonide is also organic which should be used for fruits and other edible plants." Read more

13 customers mention13 positive0 negative

Customers are satisfied with the quality of the pesticide. They mention that it's a good product, it lasts u very long time, and it'll definitely knock the wilt back. It's also good for controlling diseases and allowing them to manage the issue. Customers also say that it controls garden mollusks, which are copper-sensitive, and slugs and snails.

"...While the product didn’t fully get rid of my problem, it allowed me to manage the issue and still maintain a somewhat healthy, fruitful, garden this..." Read more

"...Sprayed with this stuff and definitely knocked the wilt back...." Read more

"...My plants look healthy, they're thriving and they are producing tomatoes...." Read more

"...As other stated, you do have to be careful because this stuff is strong, so test a little area first." Read more

29 customers mention15 positive14 negative

Customers are mixed about the disease resistance of the pesticide. Some mention that it keeps the powdery mildew from getting worse, and it kills powdery mold on pumpkins. However, some say that it only has moderate success, with some fungal diseases still impacting their plants.

"This kept the powdery mildew from not getting worse, but didn’t necessarily get rid of it 100%. I think it would be best to use prophylactically." Read more

"...By the time I was able to plant them, they had become diseased with black spots and yellowing leaves...." Read more

"...I also use it on ornamental plants. It does a good job suppressing powdery mildew but, again, does not eliminate the disease...." Read more

"Just not sure it worked. One plant is still diseased and I used several fungicides on it already, copper being the last one. None of them worked...." Read more

16 customers mention8 positive8 negative

Customers are mixed about the toxicity of the product. Some mention it's relatively non-toxic, and certified safe around humans, pets, and bees. However, others say it'd be very toxic to the environment, killing fish, aquatic invertebrates, earthworms, and other animals. The product also has extreme safety warnings.

"Earth's Ally Fungicide is certified safe around humans, pets and bees by the Organic Material Review Institute (OMRI),...." Read more

"...2. This product has extreme safety warnings; however, you will become desperate enough to make peace with this limitation...." Read more

"...Its easy to use. I like the fact its relatively non toxic, though I wear old clothes I wash afterwards just in case... And spray at dusk to avoid..." Read more

"...I thought I was observing all precautions and still ended up with chemical burns on my arms and legs as well as conjunctivitis...." Read more

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Top reviews from the United States

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Pilotcop

This will stop leaf Fungus

Reviewed in the United States on May 2, 2024

Size: 16 Fl OzVerified Purchase

Stupid me, I had a shrub with white fungus. I trimmed it and moved to a similar shrub in another flower
bed and trimmed it. OF course I spread the fungus.
Me, then started pouring alcohol on the hedge trimmer between cutting another shrub would have stopped that. That was last summer. I also sprayed this product on the arrected shrubs. New leaves coming out didn't get the fungus.
Now this year April, ( live in NC) Both shrubs are completely fungus free and look beautiful. This did now harm my Shrubs.

One person found this helpful

Helpful

RK A

Saved my garden

Reviewed in the United States on October 8, 2023

Size: 16 Fl OzVerified Purchase

Blight took over my tomatoes this summer and I was out every day removing as much as I could to try and save my plants but it was clear the blight was going to win. I don't like having to spray my plants but this year it was either that or lose them. After some research I tried this and thank goodness I did, it helped stop and blight and while some of my plants struggled a bit still, the others like my cherry tomatoes, really came back to life the last half of the growing season.

I used it on my squash plants as well to combat issues and it worked beautifully for that as well.

Was easy to mix and apply with a sprayer.

Next year I am going to try to do what I can to avoid the need to use this but at least now I know if I get on top of issues right away with a bit of this, it will work wonderfully.

18 people found this helpful

Helpful

DPW

Great product

Reviewed in the United States on May 3, 2024

Size: 16 Fl OzVerified Purchase

I bought this product to treat a fugus on my two Queen Plam trees and it works very well. I treated the trees every week for three months.

Helpful

Put up a great fight

Reviewed in the United States on September 30, 2023

Size: 16 Fl OzVerified Purchase

without this product, I wouldn’t have a garden at all. We had to consistently treat all summer, and to no avail, they would return. While the product didn’t fully get rid of my problem, it allowed me to manage the issue and still maintain a somewhat healthy, fruitful, garden this year. Without it, I’d have no plants left at all.

16 people found this helpful

Helpful

travis

Works

Reviewed in the United States on March 6, 2024

Size: 16 Fl OzVerified Purchase

Works well on my peach trees

5 people found this helpful

Helpful

P Kelly

Spill

Reviewed in the United States on December 21, 2023

Size: 16 Fl OzVerified Purchase

It leaked out some time ago. Did I get someone’s return? Mess.
I really Needed it so I used it. Can I get another for half price to replace list volume?

8 people found this helpful

Helpful

Tammy

I’m hoping this works on my Gardenias

Reviewed in the United States on April 13, 2024

Size: 16 Fl OzVerified Purchase

I sprayed my outside gardenia’s earlier today, now I wait and hope that it kills the fungus Wasn’t hard to mix or use. Fast shipping

2 people found this helpful

Helpful

Grandma in Pittsburgh

Saving my perennials!

Reviewed in the United States on December 4, 2023

Size: 16 Fl OzVerified Purchase

My flowers looked aweful at the end of summer. The leaves were turning black so I’m hoping this does the trick for spring. Very easy to apply! No mess, I just mixed in my sprinkling can and applied..

4 people found this helpful

Helpful

Top reviews from other countries

T. Deegan

Working ok!!

Reviewed in the United Kingdom on April 14, 2024

Size: 16 Fl OzVerified Purchase

Our peach has been overwhelmed by leaf curl. Seems to have reduced it by at least 70-80% with one late winter spraying of this.

One person found this helpful

Product as described, fast delivery. Thank you

Copper solution for fungus

Reviewed in the United Kingdom on March 15, 2024

Size: 16 Fl OzVerified Purchase

So far works well. I cut down branches from my trees and niw bew leaves come back.
So far no sign of fungus

Christine Timmons

Fungicide

Reviewed in the United Kingdom on January 13, 2024

Size: 16 Fl OzVerified Purchase

Just what I need

Andrew Peel

Peach curl.

Reviewed in the United Kingdom on November 28, 2023

Size: 16 Fl OzVerified Purchase

Bought this to irradiate peach leaf curl. This is ment to help.
May be a long process so only time will tell
Prompt delivery. I will keep you posted

Geoff Bray

Blight fungicide

Reviewed in the United Kingdom on October 9, 2023

Size: 16 Fl OzVerified Purchase

Having lost the whole of our Christmas potato crop to Late Potato Blight, copper fungicide appears to be the only method to halt the spread once detected. This will be ready for any future outbreak, though this year has been a bad year for blight.

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Bonide Captain Jack Copper Fungicide 16 oz Concentrated Plant Disease Control Solution for Organic Gardening

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A great ORGANIC spray an old farmer showed me to cure fungus

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Bonide Captain Jack's Liquid Copper Fungicide

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Bonide Captain Jack Copper Fungicide 16 oz Concentrated Plant Disease Control Solution for Organic Gardening

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A great ORGANIC spray an old farmer showed me to cure fungus

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Bonide Captain Jack's Liquid Copper Fungicide

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Organic Garden Bonide Captain Jack Copper Fungicide Review

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