"If we want fewer house sparrows and starlings, we do not need to kill them, we need to create an urban landscape in which a richer variety of species can thrive."
Lyanda Lynn Haupt, The Urban Bestiary
|Spotted knapweed makes a lovely yellow dye on protein fibers with an alum pre-mordant. Don't boil, just simmer. If I remember right I let the plant material soak in the water overnight first.