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

I used this product, Copper Fungicide, on my fig tree, as a prevention for fig rust. I also used it on my zucchini plants, which were showing signs of powdery mildew. It worked well in both cases.The spray came out quickly and easily. It is easy to adjust the nozzle You cannot use the container upside down, but have to lower it and awkwardly spray upwards, but it is easy enough to use.Be careful not to spray it when it is windy, as you don't want it spraying in your face. Wear gloves and wash your hands as a precaution, after using the spray.

I bought this for my braided hibiscus and my butterfly bushes, both had developed rust spots pretty badly. I sprayed the plants twice in a three week period and it has stopped the fungal spread leaving me with healthy plants again!

Cleared up most of the insects issue with my plants.

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.

My peony leaves developed brown spots/ blotches over the past few years. Since it really detracted from the beauty of the plant, I researched on Google how to get rid of it and this was recommended. I followed the bottle instructing and I had zero brown blotches this year! It worked beautifully! My plants were absolutely gorgeous this year. Would buy again, and will.

I just applied the fungicide. The package indicates it will cover 7 square yards which is 63 square feet. They suggest spraying both sides of the leaves. I sprayed one side of the plant and barely finished my rose garden. Spraying both sides would amount to about 32 square feet of coverage overall. Does the supplier refer to both sides for square foot coverage or one side only?My garden is about 200 sq. ft. which would require 4 of the 32oz. bottles I purchased , for one treatment. They recommend a second treatment in another 7 to 10 days. Total bottles necessary is 8 bottles. Get's real pricey. I should have looked into their largest size offered. I sure hope it does the trick.

Works great on my roses and zinnias. Good spray, kills bugs instantly and good price.

Have been using for years and works pretty well. There is a little bit of an order while spraying, but once dried is odorless.