In natural dyeing, mordants can be used to shift the color of the dye, and give magical, some times unexpected, but definitely exciting results!
For this piece of silk, I first did an immersion dye in a bath of expired lilac flowers. I harvested these in early fall, so the remains were very dry. Next, I silk screened some of the motifs with iron and some with copper and overdyed in a bath of madder root, giving the silk ghost images of the motif in a greenish brown from the copper and grayish pink from the iron. I then silk screened the motif again with madder and with black walnut. The multi-layering created a subtle dimensional quality to the silk.