After simmering my yarn in an alum/cream of tartar pot for an hour, then letting it sit in the pot overnight, I sealed it (wet) in zip locks to cure. I did not really measure the alum and cream of tartar, I just put a few spoonfuls in. I'm looking for a good scale so that I can be more scientific about this, but I do enjoy working intuitively! Ideally it should cure refrigerated for two weeks, but I'm short on time (the chamisa is going to seed!) so mine cured for a couple of days. I learned about curing mordanted yarn from Michele Whiplinger, and it is definitely one of my best tricks! I use an old cooler dedicated to this purpose. I keep my mordanted yarn away from my kitchen and food, so I would never put it in my home frig.
Using fresh chamisa, ground madder, and indigo I plan to dye yellow, orange, red, blue, purple, and something very dark for my outlining color (for this I will probably do multiple dye baths, using all these dye stuffs one by one, then maybe some sage if the color doesn't come out dark enough). Most of the supplies that I don't gather fresh are from Michele Whilinger's Earthues- my absolute favorite natural dyeing resource!