Creating plant-based natural dyes is a magical experience, and it’s actually easier than it looks! There are a lot of tutorials out there, and I read many of them, but the following instructions are based completely on my own process. My son absolutely loved this activity. For him, it was a real “Little Red Hen” moment: He planted the marigolds back in June, watered them all summer, harvested the flowers, picked off the petals, stirred the pot, added the silks, and voilà—magic. He claimed the first one as a cape for himself, and it looks beautiful rippling in the autumn wind. The other silk I kept for myself, to ring my vase of Michaelmas daisies and just to enjoy throughout the season. I have a lot of dye bath left over, and plan to use it to dye some worsted weight yarn as a Christmas gift. Don’t be afraid to give plant-dyeing a try—marigolds are an easy way to get your feet . . . or should I say hands? . . . wet!
In a large bowl mix up your mordant: I used two tablespoons of alum per half gallon (8 cups) of water—make sure all of the alum is dissolved. Soak your un-dyed silk in the mordant for several hours (mine soaked while I was at work, about 6 hours total). Harvest fresh marigold flowers—you’ll need about 4 or 5 cups of petals to make a vivid dye. Fill your dye pot about 3/4 full with water and add the marigold petals. Bring to a boil, and then let simmer for at least an hour, stirring and smashing (gently) the petals periodically. You will notice them cook down quite a bit! Strain the petals as best you can from the dye bath—it’s okay if a few remain, as they won’t affect the dyeing process. Add your silk to the pot and submerge fully. Continue to simmer silk in the dye bath for another half hour or so, and then remove the silks from the pot (don’t pour out the dye bath because you can use it again, though the second round of dye may be less vivid). Rinse the silks gently in first lukewarm and then cold water until the rinse runs clear. Line dry or tumble dry on low, and then iron to give the silk a nice sheen.