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Natural dyes
Posted Date: 16 Jan 2008 Resource Type: Articles/Knowledge Sharing Category: General
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Posted By: deepak .b Member Level: Silver
Rating:  Points: 2
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A word of warning: aluminium saucepans and pots have a very thin layer of aluminium oxide which will bond tightly to some of these organic dyes. Use an old pot, or one that does not matter!
Many natural dyes can be made from things you buy at the greengrocer's shop or the florist's. Beetroot, onion skin, carrot, rhubarb, spinach, many colourful flowers and berries, tea and coffee are just some of the things you can use. Many kinds of tree bark are also useful for brown dyes.
You need to chop or grind whatever you are trying, bring to the boil and simmer for half an hour or so, adding more water as some evaporates off, then dip in a test square of cloth and leave it for fifteen minutes, then hang it out to dry.
The uptake of dyes can be improved with a mordant. Add half a teaspoon of ordinary alum to about 500 ml (just under a pint) of water in a plastic container, and dissolve it. Then make up 500 ml of diluted household ammonia, and add it to the alum solution: this will produce a gel of aluminium hydroxide, which clings to both the fibres and the dye.
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