Creating an eco-print requires pressure and heat to impart the color permanently into the weave of the fabric. To do this we made dye bundles out of cotton, linen and silk fabric stuffed full of our natural goodies. We wrapped these bundles tightly around pieces of old copper pipe and rusty drill bits; the metals act as a mordant to bind the dyes to the fabric. We each made a silk scarf for ourselves and several cotton and linen squares that we will sew together and hang on the walls for decoration. - See more at: http://www.stlawu.edu/sustainability-semester/sustainability-semester-blog/eco-printing-natural-dyes-native-plants.