I just gathered some Daisy Fleabane for the dye pot. The ones in my yard not ready yet, so took a little tour around a few blocks. Found ample amounts near curbs, uncut areas etc. In my own yard, pull the whole thing out and cut off roots into the trash. (sorry you composting folk, but this stuff is invasive!).
Now stems and flowers in a pot of simmering water, turning yellow. Once color extracted, let pot cool, pull out the plants. Add the alum mordanted wool yarn, bring back to heat and get Yellow. I will then add some iron for a (hopefully) wonderful green.