Re: plant for natural green dye?

[Jennifer Horsman]

I have seen people on the internet using copper sulfate as a mordant. Is 
the CuSO4 adding color to the dye? When it occurs in nature, it tends to 
have a deep blue-green color (can you tell I'm a geologist?)

Jennifer
Katy Blanchard wrote:
One of my favorite dye plants is mullein.  I use copper sulfate as a  
mordant and get a wonderful subdued spring green

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