Yesterday I dyed some fabric with my vat of sumac/larvae soup. It went well, though it wasn't quite as enjoyable as dying with goldenrod because of the larvae. They were disgusting, and there were lots of them. And not being at the cottage and doing it in an apartment with no outside hose or backyard was somewhat awkward. Ugh, scooping out the dead bugs and sumac bits was yuck. But, in the end, it all was worth it- look at that nice soft brown colour!! The Burr House guide to natural dying says the colour (when pre mordanted with alum) will be golden copper. Is that golden copper? I'd say no. But that's the joy of natural dying- the colour can be a bit of a surprise.
FYI, the fabric on the left is 100% cotton, and the one on the right is a cotton/linen blend. Clearly the cotton picks up the colour the best.
Anyone else want to dye with sumac? I have a pot of sumac dye bath sitting on my back porch. I put so much effort into making it that I don't want to toss it yet.