An excellent preventative fungicide and bactericide for my plants. I've had great results using this to prevent the spread/re-emergence of mint rust and canna rust, powdery mildew, as well as controlling bacterial leaf spot on tomatoes. I should note though that since it's a contact fungicide/bactericide, it needs to be applied before an infection (or at least on healthy tissues) to do its job; it doesn't work very well if applied on already-infected plants. I do wish that the manufacturer would bring a mancozeb/copper hydroxide mix to the Aussie market though (ManKocide?)

I have followed all the instrustion listed. But not only the black spot fungi on my tomato didn't stop spreading. I would say it gets even worse after spraying.

I've been using Kocide Blue Extra Fungicide for years now. Its been a reliable product in my garden. I have a few fruit trees that require a good fungicide and this product does the job well. I have 140 rose plants in my garden and I used it particularly after pruning . I find spraying after rain prevents a lot of fungi's attack. On occasions I will mix Kocide Blue with a garden oil. It not only looks good but gives a longer protection to the plant.