The other day when I was chopping up red onions for soup, I saved the skins and put them in a pot, covered them with water and heated them on the wood stove for a couple of hours and then strained the skins and kept the dye.
(This picture made the yarn look lighter than it is.)
In the meantime, I soaked a bit of wool yarn in an alum bath.
Next, the wool yarn was added to the dye bath in a pot and heated to very warm and let sit for several more hours. Finally, the yarn was rinsed out.
I love the color that resulted - a rusty brown.
Using the red onion dyed yarn in the middle, some natural yarn next, and then finally some yarn I dyed with bracken last summer, I made a granny square. Next I made a square the same size as the granny square, all in the single crochet stitch. Finally, I attached the two squares using the red onion dyed yarn with the single crochet stitch around adding a loop for hanging.
I am excited to continue learning and experimenting with natural dyeing.