For this month's colour I came up with some fabrics and threads I dyed last year with blueberries. I didn't use a mordant at all. I just simmered the blueberries for 15 mins or so and used natural materials ... silk, cotton, scrim and cotton and silk threads. I left the fabrics soaking in a jar for a few days on a warm windowsill and they stayed colour fast after washing
Think "Violet Beauregarde" when she chews the blueberry gum :o)
Carolyn ♥
