The other bundle (below) was frozen, then immersed in warm water. Well, nothing happened, like in regular ice-flower dyeing -- so I decided to steam it in a stainless steel pot for 20 minutes and let it dry out each time, doing this several times over several days.
This was more like it!
Now that the silk has dried, I can see the color transferred beautifully on both, but the steaming distributed the color more deeply and evenly. The vinegar silk is on the left, steamed on the right. I'm in no hurry to use them, so won't wash either one for a few months to allow the color to set.
Blue larkspur silk -- how about that?