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Woad Dye in the UK

Woad is the traditional British blue dye plant. Sellers offer powder, seeds and plants.

Updated Oct 22, 2026. Edited by: Ilyass Ben Hakim.

Where to buy

Small UK natural dye suppliers sell woad powder. Stock is limited and often seasonal. Herb nurseries sell woad plants and seed for home growers.

Professional insight

Natural dyers buy woad by pigment form and indigotin content. Fresh leaves and dried powder behave very differently.

Ask whether the powder is extracted pigment or ground leaf.
Ground dried leaf gives far weaker blues.
Woad needs a reduction vat, not simmering.
Protein fibres such as wool take woad well.

Check the label

Botanical name Isatis tinctoria is stated.
Form: extracted pigment, powder, seed or live plant.
Woad pack weight given in grams.
Country where the woad was grown or processed.
Batch or harvest year for powder and seed.
Recipe or vat instructions included.
Safety advice for the reducing agents you will need.

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Woad plant facts

Species: Isatis tinctoria
Blue compound: Indigotin; The same pigment as in indigo.
Life cycle: Biennial; Leaves are harvested in the first year.

How to use it

1Wet the scoured fibre first.
2Make an alkaline reduction vat as your recipe states.
3Wait until the vat turns yellow green.
4Dip the fibre slowly without adding air.
5Lift it out and let it turn blue in the air.
6Repeat dips for deeper shades, then rinse.

Growing woad in the UK

Woad grows well in British gardens from spring sown seed. It self seeds freely. Cut flower heads before seed falls to limit spread.

Common questions

Is woad the same as indigo?: They give the same blue pigment but come from different plants.
Can I dye cotton with woad?: Yes, but plant fibres usually need more dips than wool.
Is woad body paint safe?: Only use cosmetic products made for skin. Dye vat chemicals are not skin safe.