Weld, Dried Chopped
Dried and chopped tops from Reseda luteola.
Use on protein or cellulose fibres. An ancient source of excellent bright yellows. Pre-mordanting recommended. Alum/c.o.t. mordant gives good results. Use at 30-50% WOF for medium shades.
TO USE: soak in water overnight, then simmer mixture at 160-175°F for 1 hour. Cool and strain. Add more water if needed and enter pre-mordanted fibre. Hold at a 160-175°F for one hour. The brightest yellows develop at these cool temperatures.
Light & washfastness: very good.