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Bonide 811 Copper 4E Fungicide 16oz (473ML)
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- Copper formulations protects a wide range of plants from turf to veggies, to fruit and flowers from a host of listed diseases
- Great for Blight! Suitable for organic gardening
- For indoor and outdoor use
- Won't harm beneficial insects
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Copper formulations protects a wide range of plants from turf to veggies, to fruit and flowers from a host of listed diseases. Great for Blight! Suitable for organic gardening. Not for sale in AK, CA.
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Top customer reviews
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I found that if you mix 1-2 tablespoons of Copper Fungicide with 1-2 tablespoons Neem Oil (per gallon of water) and spray/saturate (top and bottom of leaves, stem and about 2-4 inches around the ground at the bottom of the stem) every 2 days in the beginning and any time after it rains, it works wonders.
Remove and discard/burn any and all infected leaves every day.
After doing this for the first couple of weeks...you can back off a bit and spray once a week...so on...
TIP: Only spray very early mornings or early (cool) evenings....the sun WILL bake then if they haven't had a chance to dry.
I always did mine early mornings just as the sun was rising. That way they were dry before the sun hit them.
If you do it in the early evenings...make sure they have time to dry before nightfall....they don't like sleeping while wet....neither do I.
I garden in Central Wisconsin where septoria blight is a serious problem on tomato plants. This fungicide works well to slow down septoria blight but does not eliminate it. It allows me to get a crop of tomatoes - without it I would only have blackened plants and a few shriveled fruit. Many of my neighbors have similar problems and few get much of a tomato crop w/o using copper spray.
It's pretty straightforward to use - mix 1/4 cut to 1 gallon of water and apply with a pressure sprayer. I apply it from the first setting of my plants until mid-August - after that the septoria and the plant duke it out until the first frost. I use an organic vapor mask while applying - maybe not necessary but I don't like to take chances.
I also use it on ornamental plants. It does a good job suppressing powdery mildew but, again, does not eliminate the disease. Again, I use it from early in the growing season until mid-August - once the flowering period is over I cut out all infected stems and dispose of them in a separate area (no compost!).
This is the most effective product I have found for both septoria and powdery mildew. However, heavy use tends to build up a high copper content in the soil with unknown long term consequences.
Nothing is free.