Bordeaux mixture n. (Hort.) A fungicidal mixture composed of blue vitriol, lime, and water. The formula in common use is: blue vitriol, 6 lbs.; lime, 4 lbs.; water, 35 50 gallons.
... Cousin Parnelia happened to come to the house, Mother picked up the deed from her desk and said offhand, 'Oh, Parnelia, we bought the little Garens house for you,' and handed her the paper, and went to talking about cutworms or Bordeaux mixture." ... — The Bent Twig • Dorothy Canfield
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