Black Walnut Hull Powder

Black walnut hull powder (Juglans nigra) is a tannin-rich natural dye material that produces warm, earthy browns, from light tan to deep chocolate, depending on concentration and fiber type.

Our walnut hulls are collected in the Mesopotamia region of Turkey, shade-dried to preserve color content, then carefully powdered in-house at themazi.

Works well on: cotton, linen, wool and silk.

Color notes: it can often be used without a mordant. Iron can deepen shades toward darker, charcoal browns.

How to use black walnut hull powder

• Scour your fabric or fiber before dyeing.
• Start with 30–50 g of powder per 100 g of fiber (30–50% WOF). Use 75–100% WOF for deep chocolate browns.
• Suitable for cold, hot or all-in-one dyebath techniques.

Available sizes

100 g (3.5 oz), 400 g (14.1 oz) and 1 kg (2.2 lb).

How it is produced

Walnuts are harvested in September for food use. The hulls, a by-product, are naturally dried and then powdered on our own machines.

Pair it with

Try it on our undyed cotton fabric or undyed cotton socks.

Read the guide: Black walnut dye guide

Work out exact grams for your fabric with our free natural dye calculator and WOF chart.