cherry bark & birch leaf May 23, 2012 Natalie Stopka Dying sets of linen and vintage lace for books. As usual. But now it's warm and sunny and there are leaves to forage. The ferns are up and it's so pleasant to be working. Left: Cherry bark soaked one week, then solar dyed. Right: Birch leaves tossed straight into the dye pot. Iron modifier at top, copper modifier center, no modifier at bottom.