pH is very important when using natural dyes, and people have always used available resources to control pH. The easily available bases in the past – and even the deep past – are urine and wood ash. Urine is pH neutral when fresh, but forms ammonia when stored, causing the pH to rise. There is […]
Safflower is a complex dye plant. It contains red and yellow dyes, and they bind to different fibers. Safflower (Carthamus tinctorius) is one the oldest domesticated plansts. It arose in present-day Syria more than 5000 years ago from a cross between 2 or 3 wild species from the genus Carthamus (this is known from studies […]
