Is this blue, or is this blue?

Blue from Sarcodon fuscoindicus - Violet hedgehog
Blue from Sarcodon fuscoindicus – Violet hedgehog

A couple of months ago, I rhapsodized about finding an unexpected treasure, an embarrassment of richesSarcodon fuscoindicus, or Violet hedgehog. A few weeks after that post, my dearest went out to the same spot and picked the buttons I’d left behind, resulting in about twenty pounds—twenty pounds!—of the fresh lovelies. I had no choice but to let them dry, given the bounteous mushroom season that required daily harvesting, so I only just got my dyepots fired up in earnest this week. And I couldn’t resist—I had to go for the blue first!

I selected five dried hedgehogs, broke them into pieces, and put them into a stainless steel bowl, to which I added water and enough ammonia to bring the pH up to 10. The mushrooms soaked there for several days, after which I poured off about half the liquid into a medium-sized dyepot. I’d already done a sample run, which revealed that fibre pre-mordanted with alum was most likely to pick up blue, so to the dyepot I added a good hunk of alum-mordanted wool roving and a piece of silk.

I brought the temperature up slowly, all the while half holding my breath, because nothing seemed to be happening: all I could see was a dingy grey. Then, as the temperature rose to 160, then 170 degrees F, I noticed some blue in the wool as I raised it out of the water with a plastic spoon. At 175 degrees, I decided it was time to pull the fibre out. I carried the hot wool to the bathtub (my studio used to be a B&B cottage), where I draped it over the edge of a large plastic bucket, to cool without rinsing.

The silk (the little curl in front of the wool roving) seemed to pick up the colour more quickly and with more intensity than did the wool, so my next dyepot will involve some silk garments. In the meantime, the exhaust of this first dyepot now contains some more wool— I ran out of time to bring it up to the full temperature, so I’ve left it overnight and will see if the mushrooms still had any magic to give.

More and more, thoughts of witchcraft are entering my mind—cauldrons, magic, obsessions . . .

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5 thoughts on “Is this blue, or is this blue?”

  1. oh my goodness, that is quite divine – thank you so much for sharing your wealth of information i live in the south west uk and our fungi are somewhat less exotic 😦 really enjoying your posts 🙂

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