Bonide Captain Jack's Copper Fungicide, 32 oz Ready-to-Use Spray for Organic Gardening, Controls Common Diseases | For Organic Gardening, Controls Common Diseases on Plants

Purchased this because it was recommended to me in my gardening group as my tomato plants are experiencing early blight. After trimming 90% of the plant and having almost nothing left, I tried a DIY formula of dish soap, oil and baking soda, but the disease continued to attack my plants so I purchased this. The instructions on this organic copper spray say to cover the plants top to bottom, underside and top side, as well as the fruit. I did as directed and after only two days of use the blight disease seems to have been combated. I no longer have any curling leaves and no new spotted affected leaves or fruit. So far I would say that this worked and with only one treatment! Being it is premix, it’s very easy to use. The bottle did not leak at all, and the scent was not anything strong or overpowering. I like that it is organic because obviously I am spraying food that I intend to eat, and I also have pets. Overall, for the size of the bottle I feel like it is priced accordingly. I find this to be a quality product. Should anything change I will update my review.

This Copper Fungicide has saved a plant for me...again! This time it's a big crape Myrtle that I thought was down for the count with dusty mildew. We had had weeks of rain and the air circulation is not great where it stands. I did cut the affected branches off and then sprayed the remaining branches, using over half the bottle. Lo and behold, it worked. This is an amazing product that has taken care of brown spot on jasmine, a euonymous bush and a jade plant. It's fabulous and affordable!

I had a persistent red fungus attacking the leaves on my peach tree. It was aggressive and spreading fast. I used this product as directed and also pulled off the affected leaves. While I still saw some fungus after the first application, it was definitely reduced. Here’s the twist: This year, there’s zero sign of the red fungus, and my tree is bigger and healthier than ever. Did Captain Jack’s do the trick? Maybe! I can’t say for sure if it was the spray, the winter, or a mix of both, but I do believe this fungicide played a part in getting my tree back on track. It may not work overnight, but if you're consistent and patient, this product seems to help. A solid addition to your garden toolkit, especially if you're battling stubborn leaf issues. The smell is non-toxic. The bottle spray worked well. My peach tree is now two years old, so it's still relatively small. This bottle was more than enough for my one tree and many uses.

This copper fungicide product has been very helpful in dealing with blossom blast infection of my Asian pear tree. It could prevent the fungus from rapidly spreading across the tree and infecting other branches. Note that it does have to be applied in regular intervals. I have to see if it can prevent the fungus from developing in the first place during next year's cycle. I also used this product on a rose bush with rust on the leaves. The bush lost all its leaves initially but recovered completely with new leaves and growth. I am very pleased with the efficiency of this product.

Absolutely a great product! Saved five tomato plants that all were Blige to some sort of fungus or early blithe within the first three weeks after planting. The first photo shows what I found, the second photo is how they look three weeks after application and immediate removal of the spotted leaves. I thought this stuff would only slow down the spread, but it appears to have completely stopped it in it’s tracks. Absolutely well worth the price and it goes pretty far as well when spraying.

This copper fungicide worked really well for my plants. I noticed a big improvement after using it, and it helped stop the fungus from spreading. The ready-to-use aerosol makes it very easy to apply, and I didn’t have to mix anything. My plants look much healthier now, and I’m very happy with the results. I will definitely keep this on hand for future plant care. Highly recommended!

I applied it to an area of white rot in a cut area where a tree branch had been. Not large expectations but I was surprised it was a clear solution. Shouldn't Copper Fungicide have at least a little color (blue-green) to it?

Background: New England Zone 6a/6b (big snow, ice, and frigid winters), first attempt at growing citrus in container pot. I know, who up here even tries! Gourmet chef (or sad Wannabe) whom cultivates my own herbs for my dishes year-round. Subject: ~ 2’ tall Meyer lemon tree in container pot. Situation: Never used a fungicide before, but total success with Captain Jack’s de-bug product. For those new to the line, I can’t emphasize enough how important it is to read their products’ comprehensive brochures from beginning to end before using. I bought this copper fungicide product to help me combat what I suspect was early powdery mildew on my baby Meyer lemon tree. The tree is my very first citrus, in a container I immediately transpotted with bottom pebbles, Coast of Maine organic worm-casting potting soil, lots of perlite for better drainage and to monitor its roots through the clear plastic. Success! It was thriving all summer outside, and even exploded in new blooms and put out about 15 baby lemons, most of which dropped (because Meyers sacrifice when it senses its young stems can’t support). Then I brought it indoors to winter, still fruiting with three green globes, and placed it under one of my grow lights in a heated low humidity room. What baffled me was, despite my attention to the amount of natural light, temperatures, and minimal water it demanded, it was suddenly showing signs of mildew. To my surprise, the fungicide’s brochure explained how powdery mildew is unique and doesn’t require any water to take hold. It made sense. Remedy: I’ve cared for all of my indoor plants either where they are or in my kitchen sink. But being I’m so fond of this little lemon tree, it’s got thorns to kill, and I mean business, this one wasn’t going to be just a sink job. Armed with the Captain Jack’s fungicide, I first removed and pitched the topmost crust of soil and anything dead or remotely white, then sprayed-turnedover-sprayed the first few inched of soil, lower stems, and lower leaves in the sink. Then when dry, I moved it to the tub, massaged the top two inches of soil with more spray, and retreated the tops and underside of every leaf. I let it air dry. The most egregious white spots reappeared as it dried, but I resisted the temptation to spray it again, knowing the fungicide just takes time to work. I returned it to its place under its grow light (a Soltec canister beam). One week later, the Meyer Lemon’s leaves, while not out-of-the-woods, are showing signs of stability, if not improvement. New buds have emerged at many stem’s ends, and its spikes have grown and hardened, as if to protect its remaining nascent fruit. The fruit is looking good. 🍋 Another week later, the tree is looking great, with only a few tiny stubborn (or resistant) patches of powdery mildew (?) remaining. The 3 fruits look great, and all but one of the many new buds are growing. It’s lost no leaves since last week, and definitely thriving. I reapplied the fungicide spray again to the fruit, leaves, and soil. Conclusion, Captain Jack’s Copper Fungicide saved my Meyer Lemon.