First and second chamisa batches. The magic did not happen with the first dye bath. The second time I let the chamisa sit on the bath overnight before straining it. Also, I added about a cup of alum to the pot after straining out the plants. Maybe the premordanting did not take. Or maybe it's just better to add some alum to the dye bath anyway. One more difference was that I waited for the bath to be quite hot before I added the yarn.