One lady told us she uses it every year but she covers herself from head to toe with mask and protection. Malc is just reading an article which says it can damage your fingers if not careful when using. You often see vines against house walls sprayed bleu.
It is meant to be a bio product but it can affect livestock and earthworms (essential to the gardener) and in the past workers in the fields have died from using it.
Do I really want to advocate its use?
Bordeaux mixture (also called Bordo Mix) is a mixture of copper(II) sulfate (CuSO4) and slaked lime (Ca(OH)2) used as afungicide. It is used in vineyards, fruit-farms and gardens to prevent infestations of downy mildew, powdery mildew and other fungi. It is sprayed on plants as a preventative; its mode of action is ineffective after a fungus has become established. It was invented in the Bordeaux region of France in the late 19th century. If it is applied in large quantities annually for many years, the copper in the mixture eventually becomes a pollutant.
Bordeaux mixture has been found to be harmful to fish, livestock and—due to potential build up of copper in the soil—earthworms.
The chemical started to be used by the United Fruit Company throughout Latin America around 1922. The mixture was nicknamed perico, or "parakeet", because it would turn workers completely blue. Many workers would get sick or die of poisoning due to the toxic chemical.
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