Went to the CSA garden at TAC in Brooklyn for an outdoor dye with rust workshop. Alchemy!!
The classes are terrific for all aspects of textile work. Check out their blog for inspiration. http://www.textileartscenter.com/
http://www.katrinreifeiss.com/
Took a shibori class with Kat Reifeiss at the Textile Arts Center....Look at the results using Natural Dyes like Beech Leaves, rusted found objects and red and yellow onion skins!