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Bordeaux Mixture ratio

Friends in France have given me a bag of Bordeaux mixture - blue powder. What proportions should I mix with water? I don't want a large quantity - just a 500ml or 1 litre spray bottle. I was hoping to tackle rust on my Hollyhock. Thanks folks.
Last edited: 16 April 2017 12:04:05
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Yes! The French just say (the equivalent of) 'Yeah, whatever!' and just carry on as usual! Plenty of B/Mixture in the supermarkets such as Carrefour and in Castorama (same co as B&Q.) Thanks for the info. I might have a look for Creosote when I go over in June Apparently, the new Creo-coat is fairly useless!
Get me some creosote! Hope Brexit means I can creosote again with impunity!!
Only kidding - I'd just like to do the shed and know that it also killed the woodworm at the same time as smartening up the wood.