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How to make Bordeaux Mixture

Zone CF64 4TJ | Anonymous added on August 21, 2018 | Answered

Could you please advise precisely the ingredients and quantities required to make half a gallon of Bordeaux Mixture. There is a method on this site but I do not understand the quantity'31/3' tablespoons of copper sulphate! Thanks very much. Mary McCarthy

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Downtoearthdigs
Certified GKH Gardening Expert
Answered on August 21, 2018

3 1/3 tablespoons comes out to just about 50 ml of copper sulphate. That's for a gallon recipe, however. So if you want only half a gallon, you would want to use 35 ml of copper sulphate and 5 tablespoons or about 75 ml of hydrated lime.

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