01Know the fibre before the
colour
Wool and silk are protein fibres, while cotton and linen are
cellulose fibres. They respond differently to cleaning, temperature, and mordanting. Begin with the fibre
content rather than assuming a pale fabric is ready to dye. Scouring removes oils or finishes that can make
colour uneven; the appropriate method depends on the material. Mordants help some dyes attach, but they are
not interchangeable household ingredients. Follow a reputable recipe and the product’s handling guidance,
using dedicated equipment rather than food utensils. Label every container clearly. A first experiment on a
small sample is easier to evaluate and uses less material than committing a finished garment before you know
how its fibres and seams will respond.
02Gather with an experiment in mind
Plant variety, growing conditions,
harvest time, and storage all
influence a dye bath. Record the plant part and whether it was fresh or dried. Identify plants accurately and
collect only where permission and local rules allow; avoid scarce species and leave enough for the habitat.
A vivid flower does not necessarily produce a lasting colour on cloth. Madder, weld, and indigo belong to
different dyeing traditions and processes, so a single boiling method is not a universal recipe. Keep notes on
water, temperature, duration, and fibre preparation. If a result changes, those details are more informative
than the plant name alone. Strain loose material when a recipe calls for it to avoid patchy contact
marks.
03Test the swatch after it
dries
Judge colour on a fully rinsed, dry sample in consistent light. Wet
fibre can look much darker. Divide a swatch so one part remains protected while another receives controlled
light exposure, then compare them over time. Test washing separately using the care conditions intended for
the finished piece. Colour change may come from light, laundering, rubbing, or an interaction with the fibre,
so one successful test does not answer every question. Keep an undyed control and a retained sample from each
batch. A notebook with small, dated swatches becomes more useful than a collection of unlabelled photographs.
Treat home tests as comparisons between your samples, not as formal certification of colour
fastness.